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Sector:
INFORMATION AND COMMUNICATION TECHNOLOGY
Qualification:
COMPUTER HARDWARE SEVICING NC II
Unit of Competency:DIAGNOSE AND TROUBLESHOOT COMPUTER SYSTEMS
Module Title:
DIAGNOSING AND TROUBLESHOOTING COMPUTER SYSTEMS
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age+ o, $&+evi)ion No.
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Technical Education and Skills Deelo!"entAutho#it$
SOUTHERN ISABELA COLLEGE OF ARTS AND TRADESSantiago City
SUMMARY OF COMPETENCY-BASED LEARNING MATERIALS
No. Unit of Competency Module Title Code
1. Install computer systems and
networks
Installing computer
systems and networksELC724318
2. Diagnose and Troubleshoot
Computer Systems
Diagnosing and
Troubleshooting
Computer Systems
ELC72431
9
3. Configure computer systems
and networks
Configuring computer
systems and networksELC724320
4. Maintain computer systems
and networks
Maintaining computer
systems and networksELC724321
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age o, $&+evi)ion No.
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HOW TO USE THIS MODULE
Welcome to the Module“Diagnosing and Troubleshooting Computer
Systems”. This module contains training materials and activities for you to
complete.
The unit of competency “Diagnose and Troubleshoot Computer
Systems” contains knowledge, skills and attitudes required for aComputer
Hardware Servicing NC IIcourse.
You are required to go through a series of learning activities in order
to complete each of the learning outcomes of the module. In each learning
outcome there areInformation Sheets, Operation Sheets, and Activity
Sheets. Follow these activities on your own and answer the Self-Check at
the end of each learning activity.
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age/ o, $&+evi)ion No.
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If you have questions, don’t hesitate to ask your trainer for assistance.
Recognition of Prior Learning (RPL)
You may already have some of the knowledge and skills covered in this
module because you have:
o been working for some time
o already have completed training in this area.
If you can demonstrate to your trainer that you are competent in a
particular skill or skills, talk to him/her about having them formally
recognized so you don’t have to do he same training again. If you have a
qualification or Certificate of Competency from previous trainings show it to your trainer. If the skills you acquired are still current and relevant to this
module, they may become part of the evidence you can present for RPL. If
you are not sure about the currency of your skills, discuss it with your
trainer.
After completing this module ask your trainer to assess your
competency. Result of your assessment will be recorded in your competency
profile. All the learning activities are designed for you to complete at your
own pace.
Inside this module you will find the activities for you to complete
followed by relevant information sheets for each learning outcome. Each
learning outcome may have more than one learning activity.
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age0 o, $&+evi)ion No.
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MODULE CONTENT
COMPETENCY
SUMMARYQUALIFICATION
COMPUTER HARDWARE SERVICING NC
II
UNIT OF COMPETENCYDiagnose and Troubleshoot Computer
Systems
MODULE TITLEDiagnosing and Troubleshooting Computer
Systems
INTRODUCTION:
This unit covers the outcomes required in Diagnosing and Troubleshooting
Computer Systems.
LEARNING OUTCOMES:$. *lan and prepare ,or diagno)i) o, ,ault) o, computer )')tem)
#. Diagno)e ,ault) o, computer )')tem)
1. epair de,ect) in computer )')tem) and networ2)
3. Te)t )')tem) and networ2)
ASSESSMENT CRITERIA:$. 4ault) and error o, computer )')tem properl' determined.#. Tool) 56ardware7)o,tware8 identi,ied in accordance wit6 it) u)e) and
,unction).1. Sa,et' precaution) e)ta"li)6ed in accordance wit6 wor2place procedure).3. Component) or part) o, computer )')tem clearl' identi,ied9. 4unction) o, t6e computer )')tem) e:plained+. 4ault) and ,ailure) o, t6e computer )')tem) diagno)ed "a)e on t6e ;o"
re<uirement). De,ective component) properl' replaced and corrected
/. Error in networ2) clearl' identi,ied and repaired in line wit6 )tandardprocedure)0. De,ective component) identi,ied and )eparated to ot6er component)$&.Computer )')tem) and networ2) are te)ted in accordance wit6 t6e ;o"
re<uirement)$$. In,ormation are )6ared ,rom one computer to anot6er a) primar'
re<uirement in computer networ2ing$#.eport) are prepared and completed according to t6e compan'
re<uirement)
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age$& o, $&+evi)ion No.
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PREREQUISITE: PC OPERATION
TECHNICAL TERMS
• Fuse – Protective device against power surges
• Firmware- is a combination of hardware and software, it is a program
integrated on a chip.
• Defrag- process of reorganizing and rewriting files.
• Form factor - a standard size and shape of computer subsystem
• People ware - the persons using the computer in the goal of
finding solutions to a better and improved daily life. These can rangefrom the basic word-processing to the more advanced system
programming.
• Hardware - the physical and tangible component of electronic data
processing. These are the monitors, keyboard, mouse, all
input/output devices, as well as internal memory system.
• Software - the intangible element composed of programs that instruct
computers what to do.
• Electricity - a form of energy comprising certain charge particles, such
as electrons and protons.
• Power - is the rate in which electric energy is fed or taken from a
device measured in watts.
• Voltage - is the term used to designate electric pressure that exists
between two points.
• PPE - Personal Protective Equipment
• BOOT - is the process of turning on the computer unit.
• CMOS - Complementary Metal Oxide Semi-conductor
• BIOS - Basic Input/Output System
• DOS - Disk Operating System
• ROM - Read Only Memory
• POST - Power On Self Test
• DSL – Digital Subscriber Line
• UTP cable – Unshielded Twisted Pair cable
• UPS – Uninterruptible Power Supply
• VGA – Video Graphic Adapter
• USB – Universal Serial Bus
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age$$ o, $&+evi)ion No.
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• CPU – Central Processing Unit
• OHS – Occupational Health and Safety
• LCD – Liquid Crystal Display
• CRT – Cathode Ray Tube
•RAM – Random Access Memory
• DIMM – Double In-line Memory Module
• I/O – Input/output
LEARNING
OUTCOME #1
*lan and prepare ,or diagno)i) o, ,ault) o, computer)')tem)
CONTENTS:
• Di,,erent t'pe) o, computer )')tem) error.
• So,tware a) tool) ,or diagno)ing computer )')tem).
• Hand tool) and it) u)e).
• *rocedure) in diagno)ing computer )')tem)
• Sa,et' precaution)
ASSESSMENT CRITERIA:$. 4ault) and error o, computer )')tem properl' determined.#. Tool) 56ardware7)o,tware8 identi,ied in accordance wit6 it) u)e) and ,unction).1. Sa,et' precaution) e)ta"li)6ed in accordance wit6 wor2place procedure).
CONDITION:
Trainees must be provided with the following:
1. WORKPLACE LOCATION2. EQUIPMENT
3. ToolsScrew driver) 5a))orted8*lier) 5a))orted8Soldering iron=renc6e)>tilit' )o,tware
4. *olicie) and procedure)
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age$# o, $&+evi)ion No.
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*rocedure) and guideline)Sa,et' precaution)
EVALUATION METHOD:$. Hand)-on#. Direct o")ervation1. *ractical demon)tration
LEARNING OUTCOME SUMMARY
Learning Experiences
Learning Outcome 1*lan and prepare ,or diagno)i) o, ,ault) o, computer )')tem)
Learning Activities Special Instructions
1.Read information sheet
2.1-1 ” Different types of
computer systems error.
If you have some problem on the content
of the information sheet don’t hesitate to
approach your facilitator.
If you feel that you are now
knowledgeable on the content of the
information sheet, you can now answer
self check provided in the module.2.Answer self-check 2.1-1 Compare your answer to the answer key
2.1-1. If you got 100% correct answer in
this self-check, you can now move to the
next information sheet. If not review the
information sheet and go over the self-
check again.
3.Read information sheet If you have some problem on the content
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age$1 o, $&+evi)ion No.
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2.1-2 “Plan and
Preparing Diagnostic
Procedure”
of the information sheet don’t hesitate to
approach your facilitator.
If you feel that you are now
knowledgeable on the content of the
information sheet, you can now answer Job Sheet provided in the module.
4.Answer self-check 2.1-2 Compare your answer to the answer key
2.1-2. If you got 100% correct answer in
this self-check, you can now perform
task sheet 2.1-1. If not review the
information sheet and go over the self-
check again.
5.Do Task Sheet 2.1-1
Diagnostic Plan
Compare your work to the Performance
Checklist. If you got 100% correct answerin this task, you can now move to the
next information sheet. If not review the
information sheet and go over the task
again.
6.Read information sheet
2.1-3 “Tools for Testing
Computer System”
If you have some problem on the content
of the information sheet don’t hesitate to
approach your facilitator.
If you feel that you are now
knowledgeable on the content of the
information sheet, you can now answer
self check provided in the module.
7.Answer self-check 2.1-2 Compare your answer to the answer key
2.1-2. If you got 100% correct answer in
this self-check, you can now move to the
next information sheet. If not review the
information sheet and go over the self-
check again.
8.Read information sheet2.1-4 “Common Windows
XP Diagnostic Utilities &
Tools”
If you have some problem on the contentof the information sheet don’t hesitate to
approach your facilitator.
If you feel that you are now
knowledgeable on the content of the
information sheet, you can now answer
Job Sheet provided in the module.
9.Answer self-check 2.1-4 Compare your answer to the answer key
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age$3 o, $&+evi)ion No.
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2.1-2. If you got 100% correct answer in
this self-check, you can now move to the
next information sheet. If not review the
information sheet and go over the self-
check again.10.Do Job Sheet 2.1-1
Perform Disk Error Check
Compare your work to the Performance
Checklist. If you got 100% correct answer
in this task, you can now move to the
next Learning Outcome. If not review the
information sheet and go over the task
again.
INFORMATION SHEET 2.1.1
Different Types of Computer System Errors
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to identify
Different Types of Computer System Errors.
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age$9 o, $&+evi)ion No.
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as your computer ever stopped working for no apparent reason? The
frustration brought on by technological advancements can cause any
sane person to yank the plug right out of the wall. Luckily, there's a better
way. Learn what to do when your computer freezes, facts about different
kinds of computer failure, the various ways to restart Macs and PCs, andhow to prevent future freezes.
Types of computer failures
The three main types of computer failures are system errors, freezing,
and applications quitting. Simply put, Mac system errors warn you with
the dreaded bomb Alert box.
1.A system error occurs when there is a conflict between theoperating
system and one or moreapplications, like Microsoft Word or InternetExplorer.
2.The next type of computer failure is freezing, also known as crashing
or hanging. In this case, the computer locks up and the mouse and
keyboard become useless accessories. Freezing exists both at the
individual program level and on a system wide basis.
3.An application suddenly quitting is the third type of computer failure
and probably the most common. This means that only one program
is effected rather than the whole system. All three types of computerfailures are frustrating if you do not know what to do, but by
following these steps you will learn how to properly unfreeze your
computer.
How to restart a PC
fter any common computer failure follow these steps. Simultaneously
hold down theControl key, the Alt key, and theDelete key. A dialogue
box will ask you if you want to exit the current program. Click the Task
List button. AnEnd Task window appears and lists the programs you are
currently running. Select the program you were in when your computer
froze. For instance, if you were working with Microsoft Word, but went to
check your e-mail in Netscape, and then the computer crashed, you would
select Netscape in the End Task window. After selecting the correct
program, hit the End Task button. Hopefully, the program will unlock at
this point. You should then restart your computer by going to theStart
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age$+ o, $&+evi)ion No.
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menu and selectingShut Down. In theShut Down window, click the
Restart button andOK, and the computer will reboot.
How to prevent future freezes
nowing how to restart a computer is crucial, but it is also important to
know measures to take to prevent future freezes. The most useful steps
are rebuilding your desktop, emptying your trash, deleting excess e-mails,
and cleaning out temporary files and histories.
System error 5 - Access is denied
This is a permission issue. If the net view command fails with a"System error 5 has occurred. Access is denied." message, 1) make sure you
are logged on using an account that has permission to view the shares on
the remote computer. 2) Need to cache credential: logon the same username
and password on both computers or use net net use\\computername
/user:username command. 3) Make sure the Netlogon service is running.
System error 8 - Not enough storage is available to process this command
or System error 234 - More data is available.
Symptoms: If you attempt to start the server service manually, the followingerrors may be displayed: System error 234 has occurred. More data is
available. Or system error 8 has occurred. Not enough storage is available to
process this command. The event viewer shows "Event ID: 7023.
Description: The Server service terminated with the following error: More
data is available. Or Event ID: 7001. Description: The Net Logon service
depends on the Server service which failed to start because of the following
error: More data is available.
Resolutions: 1) apply (or reapply) the latest Windows NT Service pack.
2) remove any unnecessary entries from this value in the registry,
System error 51 has occurred - The remote computer is not available
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age$ o, $&+evi)ion No.
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Symptoms: You may receive "System error 51 has occurred. The remote
computer is not available" when using net use to map the computer drive.
Resolutions: 1. Make sure server service is running on the remote
computer
System error 52 - You were not connected because a duplicate name exists
on the network.
Symptoms: you can ping a host but not net view it. When using net view
\\hostname, you get system error 52 - a duplicate name exists on the
network.
Resolutions: there are two host names or alias name (cname) are pointed to
the same IP. 1) check the WINS records. 2) check DNS records. 3) Go to
System in the Control Panel to change the computer name and try again.
System error 53 - The network path was not found.
Symptom: when using net view\\ip or\\computername, you get system
error 53.
Resolutions: 1) if it is domain environment, check your WINS; 2) if it is peer-
to-peer workgroup, enable NetBIOS over TCP/IP; 3) make sure the machine
is running; 4) make sure file and Printer Share enabled on remote computer;
5) make sure client for ms networks is enabled on local computer; 6) make
sure you type the correct name. 7) Make sure no firewall running or any
security setting.
VPN Case Study -Can ping VPN server but receive System error 53 using
net use
Case Study -System Error 53 - The network path was not found.
System error 67 - The network name cannot be found
Symptom: When using net view \\computer or net use \\IP, you may
receive above error message.
Resolution: 1. Make sure you type the correct computer name or shared
name.
2. Make sure the Workstation service is running on the local computer while
Server service is running on the remote computer.
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
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More troubleshooting hereSystem error 67 has occurred
System error 85 has occurred. The local device name is already in use
Cause: net use /persistent: yes is default settings for NT and win2000/XP. If
you have mapped some network drives and check the reconnect at logon, or
your network uses logon script to map network drives, the mapped network
drives may show red Xs. If you enable echo and pause the logon script or if
using net use to map the same drive manually, you may get "System error 85
has occurred. The local device name is already in use." One thing you may
want to try is using net use /persistent: no, for example, net use i:
\\servername\folder /persistent: no.
System error 1219 has occurred - The credentials supplied conflict with an
existing set of credentials
Symptoms: 1) When you log on to a domain from w2k client; 2) when
attempting to join a domain, you may receive the following error
message: The credentials supplied conflict with an existing set of
credentials.
Resolutions: This may cause because of attempting to make two or more
connections to the same server using two or more sets of credentials
1. Go to windows explorer and disconnect all network drives. Then re-logon.2. Delete the profile or copy another profile. Note: you may lost all settings
and data in My Documents when deleting or copying profile.
3. If solution 1 and 2 doesn't work, try this: 1) Log on as an administrator at
any workstation and run regedt32. 2) Select HKEY_USERS, but do not open.
3) From the Registry menu, click Load Hive. 4) This will bring up a Load
Hive dialog box. Locate the Ntuser.dat file for the user with the errors. Select
the Ntuser.dat and click Open. You may enter any string for the Key Name.
Use TEST for ease of use pertaining to the remainder of this article. 5)
Locate the Username value under the following key in the registry:HKEY_USERS\TEST\Network\Username. 6) Delete the string for Username
(leaving it blank is sufficient). 7) Select the TEST hive that you previously
loaded, click the Registry menu, and then click Unload Hive. 8) Quit
Registry Editor.
4. If you get this message when joining the domain, make sure 1) you have
delete the computer from AD; 2) delete it from DNS; 3) delete it from WINS.
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
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System error 1231 has occurred. The network location cannot be reached.
Symptom: When using net view\\computername, you may receive System
error 1231.
Resolutions: 1) make sure Client for MS Networks is enabled, 2) make sure
you have permission to access it.
System Error 1240 - The account is not authorized to login from this
station.
Symptoms: 1. You may get the system error 1240 when using net view
\\remotecomputer'2. “Workgroup_name is not accessible… Account is Not Authorized to Log In
to this Station” when attempting to browse the workgroup from a networking
computer.
Resolutions: 1. Use Regedit to enable unencrypted (plain text) passwords for
the SMB client. 2. Enable Send Unencrypted Password to Connect to 3rd
Party SMB Servers under Local Security Policy. 3. Set the following policies
as showing: Digitally sign client communications (always) - disabled
Digitally sign server communications (always)- disabled
Digitally sign server communications (when possible) - disabled
LAN Manager Authentication Level set to Send LM and NTLM - use NTLMv2
session security if negotiated - (default) send LM & NTLM responses
Secure channel: Digitally encrypt or sign secure channel data (always) -
disabled
Secure channel: Require strong (Windows 2000 or later) session key -
disabled
4. Contact the third-party SMB server manufacturer if you have a third-
party SMB server, such as DEC Pathworks, Samba or Linux.
5. If you are running Windows 9x, you may want tore-configure windowsauthentication for network logons.
System error 1311 - There are currently no logon servers available to
service the logon request
Symptoms: The primary purpose of logging on with cached credentials is to
enable you to access the local workstation. However, if you have logged on by
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
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cached credentials, you may be unable to access network resources because
you have not been authenticated. For example 1) after you log on to a
w2k/xp laptop by using cached credentials, you may be unable to access the
network resources. This issue is commonly experienced by laptop users
whose computer resides in a Windows Server domain and who log on to thecomputer by using cached credentials prior to being able to establish a
remote access connection. 2) You log on to a w2k/xp laptop with a domain
logon option in a workgroup network. After you establish the connection and
you try to map the network drives, the operation may be unsuccessful, and
you may receive the following error message: "System Error: (1311) There are
currently no logon servers available to service the logon request."
Resolutions: To authenticate the cached credentials, 1) if it is w2k/xp, use
net command, for example, net use \\servername\sharename
/user:username. 2) if xp, open Windows Explorer>Tools>Map Network Drive.Click Connect using a different user name, enter the username and
password.
System error 1326 has occurred - Logon failure: unknown user name or
bad password.
Symptom: when using net use to map a network drive, you may receive
"System error 1326 has occurred. Logon failure: unknown user name or bad
password." message.
Resolutions: 1) create a user account on remote computer; 2) need to
enable the guest account; 3) make sure the remote computer doesn't use
auto-logon and blank password; 4) make sure you have a folder or drive
shared on the remote computer. 5) use net use \\servername /user:
username command. Make sure you type correct command (e.g. use net use
\\servername \user: username will get this error too)
System error 1331 has occurred - Logon failure: account current disable
Symptom: When using net use \\computername command, you may
receive above error message.
Resolutions: this is cache credentials issue. To fix this problem and cache
the credentials, use net use\\computername /user: username command.
System error 1385 has occurred - Logon failure: the user has not been
granted the requested logon type at this computer
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Computer Systems
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Symptoms: When using net use\\remotecomouter\ahredname, you may
receive above message.
Resolution: 1. The users do not have permission to connect to the remote
computer. To resolve this problem: on the remote computer, select Administrative Tools>Local Security Settings>Local Policies>User Rights
Assignment, right-click on Access this computer from the
network>Properties>Add Users or Groups, add everyone or any users you
want to be able to access the computer from the network.
2. refer to this case:Solved: System error 1385 - Logon failure -
http://chicagotech.net/netforums/viewtopic.php?t=286
System error 1396 has occurred - Logon Failure: The target account name
is incorrect.
Symptoms: 1. when using net use, you may receive above message.
2. when using net view \\hostname, you may receive "System error 5 has
occurred. Access is denied.". However, net view \\ip works fine.
3. You may receive above error while running logon script.
Causes: 1. SPN for the domain that is hosting the replica has not been
propagated.
2. Incorrect target account name or the server is not online.
3. If you have DFS, make sure the DFSRoot is available.
Refer to RL060704
System error 6118 has occurred. The list of servers for this workgroup is
not currently available
SYMPTOMS: 1) After enabling ICS/ICF, you can't see any computes on My
Network places. If you try, you may get "workgroup is not accessible". 2)
If you use thenet viewcommand, you may receive "System error 6118
has occurred. The list of servers for this workgroup is not currentlyavailable." message.
Resolutions:
1) This behavior can occur if you enable the ICF that will closes the ports for
file sharing by default. To open these ports, right-click the network
connection that is firewall protected> Properties>Advanced>Settings>Service
Tab>Add, Enter 127.0.0.1) for the required Internet Protocol (IP) number.
Enter UDP ports from 135 through 139, and TCP ports from 135 through
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139 one by one (the external and internal port numbers should be identical).
2) This may occur if the workgroup name and the domain name are the
different.
3) No master browser. Starting Computer Browser Service on one of w2k/xp
computers should fix the problem
SELF CHECK 2.1-1
Write the Symptoms & Resolutions of the following system Errors
System
Error Symptoms Action/resolutions9$ The
remote
computer
is not
available
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+ The
network
name
cannot be
found
1219 Thecredent
ials
supplie
d
conflict
with an
existing
set of
credent
ials
$#1$ The
network
location
cannot be
reached.
ANSWER KEY
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SystemError Symtoms A!tion"reso#$tions
9$
The remote
computer
is not
available
You can ping a host
but not net view it. When using net view
\\hostname, you get
system error 52 - a
duplicate name exists
on the network.
Make sure server service is running on
the remote computer
+
The
network
namecannot be
found
When using net view
\\computer or net use
\\IP, you may receive
above error message.
1. Make sure you type the correct
computer name or shared name.
2. Make sure the Workstation service isrunning on the local computer while
Server service is running on the remote
computer.
$#$0
The
credent
ialssupplie
d
conflict
with an
existing
set of
credent
ials
1) When you log on to
a domain from w2k
client; 2) when
attempting to join a
domain, you may
receive the following
error message: The
credentials supplied
conflict with an
existing set of
credentials
This may cause because of attempting to
make two or more connections to the
same server using two or more sets of
credentials
1. Go to windows explorer and
disconnect all network drives. Then re-
logon.
2. Delete the profile or copy another
profile. Note: you may lost all settings
and data in My Documents when
deleting or copying profile.
3. If solution 1 and 2 doesn't work,
$#1$
The
network
location
cannot be
reached.
When using net view
\\computername, you
may receive System
error 1231.
1) make sure Client for MS Networks is
enabled, 2) make sure you have
permission to access it.
SICAT-TESDAQA SYSTEM.
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Computer Systems
And Networks
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INFORMATION SHEET 2.1-2
Plan and Preparing Diagnostic Procedure
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to Plan and
Prepare Diagnostic Procedure.
PC Diagnosing
Probably the most frustrating problem computer users
run into are startup problems, where your computer
won’t boot. Equally annoying are error messages you
constantly run into during your computer’s startup
process. In this module you will be given a few tips on
how you can avoid some of the most common problems
that happen right after your computer turns on.
Troubleshooting Plan for Personal Computers
How to Troubleshoot the Computer?
Here you will learn the basic troubleshooting methods of your computer.
Trial and error: When you find a faulty component in your computer,
check it with the other computers so that you can make sure whether
the fault is in the component or not.
Check cables: In case of any device failure, check all the cables of
your computer such as data cables, power cable, internal circuitry
cables and make sure that all these are plugged in and working fine.
Hardware settings: Check the hardware settings in the CMOS and in
the device manager of the system and make all the device drivers are
up to date and all the cards are plugged in properly.
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Notice changes: When you notice a software or hardware error in
your computer, determine what was changed before the problem
occurred
Event viewer: In the event viewer, you will find the error or warning
messages associated with any faulty hardware or software.
Make notes: Troubleshooting is a big learning option and we can
learn a lot when we face any kind of troubleshooting in our computer.
Make notes including the error messages and their solutions, so that
you have a record on how a certain problem occurred and how did you
solve it.
Sample Diagnostic Plan
List down all possible components to be checked based on the symptoms.
Symptoms: Dead Computer Monitor Good Defective Remedy
AC outlet
AVR
AVR fuse
Monitor Power Cable
Monitor Switch
Power Supply
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Common Trouble for Computer Units
1.Double check the power connections.
2.Voltage Regulator and power supply could cause power failure in thecomputer unit.
3.Check the power cords and cable connectors in your computer unit.
4.Unseated card. Loose cards could cause it to malfunction.
5.Do you have ink or toners in your printer? Check the ink
toners/cartridges in your printers.
6. Check the boot sequence configuration in the advance BIOS (Basic
Input/output Unit) setup.
Diagnosing Network Connection
These are the things to look for if a PC will not connect to the internet or
network.
• First check the cable connecting to the network card into the network
hub.
• Check the back of the computer to see if the network card light is on
•
Check the network cable• Check the network HUB
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Networ
k HUB
Netwo
rk
cable
Network
card
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SELF CHEC !"#$!
TRUE OR !"#E$ W%ite T i t'e statement is T%(e and i t'e statement is alse.
))))1. T'e most %(st%ating *%o+lem com*(te% (se%s %(n into a%e sta%t(* *%o+lems.
____2.When you find a faulty component in your computer, check it with
the other computers so that you can make sure whether the fault
is in the component or not.
____3.Troubleshooting is a big learning option and we can learn a lot
when we face any kind of troubleshooting in our computer.
))))4.Unseated card or loose cards could cause computer to function
normally.
____5.Voltage Regulator and power supply could cause power failure in
the computer unit.
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Computer Systems
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!,#WER -E
1. T
2. T
3. T
4.
/. T
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TASK SHEET 2.1.1
T%tle & Diagnostic PlanPer'or(a)ce Ob*ect%+e & Given the needed materials, supplies & equipment,
create a diagnostic plan in troubleshooting a power
supply.
S,--l%e./ Tool. 0 E1,%-(e)t &
• Working PC
• Printer
•Bond paper
•Ruler
•Pencil/Eraser
•Power Supply
•Diagnostic Plan template
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Diagnosing And
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Computer Systems
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Steps/ Procedure:
1.Prepare the necessary tools, supplies and materials
2.Using template, make a diagnostic plan of the computer power supply3.Let your trainer check your work.
Assessment Method:
Demonstration , Performance Criteria checklist
Performance Criteria Checklist
CRITERIA
Did you…
YES NO
1. Followed sequence of steps in diagnosing.
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2. Observed safety precautions.
3. Used appropriate tools in diagnosing.
4. Created a diagnostic plan for troubleshooting.
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INFORMATION SHEET 2.1-3
Hand Tools for Testing and Repair Computer System & Network
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to identify and
use Hand Tools for Testing and troubleshooting Computer System
& Network
Introduction
Tools and equipment play a vital role in troubleshooting; it helps the
user to determine the errors found in your computer hardware and network.
Tools used to test and repair hardware problems:
1. Screw drivers-is used to install and remove screws in your computer
unit.
2. Pliers and tweezers- is used for picking small parts
in your computer unit.
3. Soldering iron- is primarily used for connecting
terminals in your power supply and circuit board with the
use of a soldering lead.
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4. Anti-static wrist strap, mat and spray- are used to eliminate
electrostatic discharge in your work area.
5. Lens cleaner-is used for cleaning optical media, such as DVD-ROMS
and CD-writers.
6. Thermal paste-is a paste used for heat dissipation for your processor.
Network Troubleshooting Tools
1. LAN Tester – is a device used to test the network connection..
2. Crimping tool- is a device used to crimp the RJ45 connector to the UTP
cable.
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Self Check 2.1-3
Place write your answers in your computer using MS Word and save in
your folder:
1. Enumerate the six tools used for troubleshooting.
a.
b. c.
d.
e.
f.
2. Enumerate the two network troubleshooting tools.
a.
b.
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ANSWER KEY 2.1-3
1. Enumerate the six tools used for troubleshooting.
a. Screw drivers
b. Pliers and tweezers
c. Soldering iron
d. Anti-static wrist strap, mat and spray
e. Lens cleaner
f. Thermal paste2. Enumerate the two network troubleshooting tools.
a. LAN Tester
b. Crimping tool
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INFORMATION SHEET 2.1-4
Common %in&o's () Diagnosti! Uti#ities * Too#s
Learning Objective:
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After reading this INFORMATION SHEET, YOU MUST be able to identify and
useCommon Windows XP Diagnostic Utilities & Tools
1.There are a lot of diagnostic utilities for Windows XP, both included
with the system and third-party applications, that can examine yourcomputer for a range of problems. Microsoft's own, included utilities
have been specially trimmed to apply to certain devices and uses,
making them the best choice for all but the most devastating of
problems.
Disk Utilities
2.Many errors can be caused by hard disk problems. The Disk Cleanup,
Disk Defragmenter and Disk Error Checking utilities can assess and
fix many of these problems. All can be found under the System Toolssection of the Accessories sub-menu. Also, running your hard drive
manufacturer's specific disk diagnostic tool can help to diagnose any
read or write errors that cause application problems in Windows XP.
Application and Memory Utilities
3.Run time errors, blue screens and other memory errors are often
caused by badly written programs or incorrect system calls. The Dr.
Watson tool is great for checking application errors and can be
accessed by clicking the "Run" shortcut from the Start menu, typingin "DRWATSN32" and pressing "Enter." Memtest86+ is another great
tool for checking your computer's standalone memory (see Resources).
Network Diagnostics
4.The Network Diagnostics Tool is included with Windows XP and
provides a way to test yourInternet connection settings. You can
access it from Internet Explorer by clicking "Diagnose Connect
Problems" from an error page or by selecting the tool under the "Tools"
option menu. You can also right-click any network connection from
the Network Connections menu and choose to troubleshoot the
connection there to do further network diagnostics. Also, try using a
website such as Speed Test (see Resources) to test your broadband
connection speed and diagnose any speed issues.
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Hardware Diagnostics
5.Under the Device Manager you can see hardware that is working
improperly, because it will have a warning icon next to it. Right-clickthat device and choose to troubleshoot. This will bring up the device
troubleshooting utility that will often try to update the driver or fix an
existing driver.
Malware and Adware Utilities
6.Adware, malware and viruses can infect your computer, decimate its
performance and siphon your private data from your fingertips. Sincemost of these malicious programs are built to target Windows XP, it is
important to regularly check for malware. Tools such as Lavasoft's Ad-
Aware or Spybot Search & Destroy are great utilities for finding and
eliminating harmful or infected applications (see Resources). In
combination with traditional anti-virus software such as Norton or
McAfee, they are essential for keeping your computer running
smoothly.
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Self Check 2.1-4
Mark X the appropriate classifications of the following utilities.Dis0
Ut
i
l
it
i
es
!**lication
andemo%
Utilities
,etwo%0
Diagnostics
a%dwa%e
Diagnostics
alwa%e
and!dwa%e
Utilities
#*+ot #ea%c'
D%. Watson tool
Dis0 Clean(*
emtest65
Dis0 De%agmente%
Deice anage%
#*eed Test
Dis0 E%%o% C'ec0ing (tilities
"aasot7s !d8!wa%e
,o%ton o% c!ee
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Answer key
Dis0 U
t
il
i
t
ie
s
!**licationand
emo%
Utilities
,etwo%0 Diagnostics
a%dwa%eDiagnostics
alwa%eand
!dwa%e
Utilities
#*+ot #ea%c' x
D%. Watson tool x
Dis0 Clean(* x
emtest65 x
Dis0 De%agmente% x
Deice t%o(+les'ooting (tilit x
#*eed Test x
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Computer Systems
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Dis0 E%%o% C'ec0ing (tilities x
"aasot7s !d8!wa%e x
,o%ton o% c!ee x
Job Sheet 2.1-1
T%tle & Per'or( D%.k Error C2eck
Performance Objectives:
Given a working personal computer you are going
to Perform Disk Error CheckS,--l%e. & Utility Software
Tool.3E1,%-(e)t & Working PC
Ste-.3 Proced,re&
1. %om #ta%t9 c'oose R(n9 and t*e in$ :cmd: t'at will o*en a command8line DO#
window.
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I))ued "'
*age31 o, $&+evi)ion No.
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2. To %(n t'e command in %e*ai% mode9 t*e in$ :c'0ds0 c$;%: w'e%e t'e 7c7 stands o% t'e
C d%ie and 7%7 o% %e*ai%.
3. < o( get an messages li0e t'is$ C'0ds0 cannot %(n +eca(se t'e ol(me is in (se +
anot'e% *%ocess. Wo(ld o( li0e to sc'ed(le t'is ol(me to +e c'ec0ed t'e ne=t time
t'e sstem %esta%ts> ?;,@. T*e 9 and t'en *%ess E,TER to sc'ed(le t'e dis0 c'ec09
and t'en %esta%t o(% com*(te% to sta%t t'e dis0 c'ec0.4. O% o( can %(n c'0ds0$ %om Com*(te%$ %ig't clic0 :"ocal Dis0 ?C$@: o% an ot'e%
dis0 o( want to c'ec0.
/. Ao to P%o*e%ties9 clic0 on Tools9 and clic0 t'e +(tton :C'ec0 ,ow: (nde% E%%o%
C'ec0ing.
6. C'ec0 t'e two +o=es$ :!(tomaticall i= ile sstem e%%o%s: and :#can o% and attem*t
%ecoe% o +ad secto%s:. !nd clic0 #ta%t.
B. < o( get an messages li0e t'is$ T'e dis0 c'ec0 co(ld not +e *e%o%med +eca(se t'e
dis0 c'ec0 (tilit needs e=cl(sie access to some Windows iles on t'e dis0. T'ese
iles can +e accessed + %esta%ting Windows. Do o( want to sc'ed(le t'e dis0 c'ec0
to occ(% t'e ne=t time o( %esta%t t'e com*(te%> Clic0 es to sc'ed(le t'e dis0 c'ec09
and t'en %esta%t o(% com*(te% to sta%t t'e dis0 c'ec0.. Once t'e mac'ine is %esta%ted9 let it contin(e to scan and %e*ai% + itsel.
A..e..(e)t Met2od&
Demonst%ation9 Pe%o%mance C%ite%ia c'ec0list
PERFORMANCE CHECKLIST
Performance Criteria
Did you… Yes No
1. Started the computer properly
2. Followed the procedures to Run check disk
3. Repaired & fixed Errors.
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age33 o, $&+evi)ion No.
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4. Followed safety procedures while performing check disk.
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age39 o, $&+evi)ion No.
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LEARNING
OUTCOME #2
DIA(N!SE 4A>?TS !4 C!M*>TE SYSTEM
CONTENTS&
• *art) and ,unction) o, computer )')tem
• So,tware 5 operating )')tem% application )o,tware8
• Electrical t6eor'
• Computer monitor)
• Tec6ni<ue) ,or diagno)ing computer )')tem
ASSESSMENT CRITERIA:$. Component) or part) o, computer )')tem clearl' identi,ied#. 4unction) o, t6e computer )')tem) e:plained1. 4ault) and ,ailure) o, t6e computer )')tem) diagno)ed "a)e on t6e ;o"
re<uirement)
CONDITION:
Trainees must be provided with the following:1. WORKPLACE LOCATION
2. Tools, Materials and Equipment and Facilities Screw driver) 5a))orted8 *lier) 5a))orted8=renc6e) >tilit' )o,tware)Connector) Adaptor)Di)2ette) CD !MComplete )et o, wor2ing computer Spare o, all component)Multimeter Appropriate )o,tware)
EVALUATION METHOD:
$. Hand)-on#. Direct o")ervation1. *ractical demon)tration
LEARNING OUTCOME SUMMARY
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age1$ o, $&+evi)ion No.
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Lear)%)4 E5-er%e)ce.
Learning Outcome 2
DIAGNOSE FAULTS OF COMPUTER SYSTEM
Learning Activities Special Instructions
1. Read information sheet 2.2-1 ”
Parts and function of computer
system”
If you have some problem on the
content of the information sheet
don’t hesitate to approach your
facilitator.
If you feel that you are now
knowledgeable on the content of
the information sheet, you can now
answer self check provided in the
module.
2. Answer self-check 2.2-1 Compare your answer to the
answer key 2.2-1. If you got 100%correct answer in this self-check,
you can now perform task sheet
2.2-1. If not review the information
sheet and go over the self-check
again.
3. Do Task Sheet 2.2-1
Inventory of Computer Parts
Compare your work to the checklist
and let your trainer check it. If you
got 100% correct answer in this
activity, you can now perform jobsheet 2.2-1. If not review the
information sheet and go over the
activity again.
4. Perform Job Sheet 2.2-1
Upgrade and Repair Operating
System
Compare your answer to the
Performance Checklist. If you got
100% correct answer in this
activity, you can now move to the
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age1# o, $&+evi)ion No.
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next Information Sheet. If not
review the information sheet and go
over the task again.
5. Read information sheet 2.2-2
“Software Packages And Use Of Application Programs”
If you have some problem on the
content of the information sheetdon’t hesitate to approach your
facilitator.
If you feel that you are now
knowledgeable on the content of
the information sheet, you can now
answer self check provided in the
module.
6. Answer self-check 2.2-2 Compare your answer to the
answer key 2.2-2. If you got 100%correct answer in this self-check,
you can now move to the
Information Sheet. If not review the
information sheet and go over the
self-check again.
7. Read information sheet 2.2-3
“Techniques for Diagnosing
Computer System”
If you have some problem on the
content of the information sheet
don’t hesitate to approach your
facilitator.
If you feel that you are now
knowledgeable on the content of
the information sheet, you can
answer self check provided in the
module.
8. Answer self-check 2.2-3 Compare your answer to the
answer key 2.2-3. If you got 100%
correct answer in this self-check,
you can now perform task sheet
2.2-2. If not review the informationsheet and go over the self-check
again.
9. Do Task Sheet 2.2-2
Faulty Connection of Computer
Peripherals
Evaluate your work to the Checklist
2.2-2. If you got 100% correct
answer in this task, you can now
move to the next learning Outcome.
If not review the information sheet
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age11 o, $&+evi)ion No.
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and go over the task again.
INFORMATION SHEET 2.2-1
Parts and function of computer system
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to identify Parts
and function of computer system.
!RDW!RE
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age13 o, $&+evi)ion No.
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!n e=*loded iew o a mode%n *e%sonal com*(te% and *e%i*'e%als$
1. #canne% 2. CPU ?ic%o*%ocesso% @
3. P%ima% sto%age ?R!@
4. E=*ansion ca%ds ?g%a*'ics ca%ds9 etc.@
/. Powe% s(**l
6. O*tical disc d%ie
B. #econda% sto%age ?a%d dis0 @
. ot'e%+oa%d
. #*ea0e%s
1. onito%
11. #stem sotwa%e
12. !**lication sotwa%e
13. -e+oa%d
14. o(se
1/. E=te%nal 'a%d dis0
16. P%inte%
SICAT-TESDAQA SYSTEM.
Computer HardwareServicing NC II
Date Developed!cto"er #$% #&$&
Document No.
Diagnosing And
Troubleshooting
Computer Systems
And Networks
Developed "' Alain C. (allarde
I))ued "'
*age19 o, $&+evi)ion No.
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! st%i**ed !TX case ling on its side.
! com*(te% case is t'e enclos(%e t'at contains t'e main com*onents o a com*(te%.
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and *lastic 'ae +een (sed.
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sotwa%e *%og%am inst%(ctions.
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!s(s mot'e%+oa%d
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+oa%d wit'in a *e%sonal com*(te%.
Ma%) (e(or6
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! PC7s main memo% is ast sto%age t'at is di%ectl accessi+le + t'e CPU9 and is (sed
to sto%e t'e c(%%entl e=ec(ting *%og%am and immediatel needed data.
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g%a*'ics ada*te% o% ideo ada*te% 8 *%ocesses and %ende%s t'eg%a*'ics o(t*(t %om t'e com*(te% to t'e com*(te% dis*la9
and is an essential *a%t o t'e mode%n com*(te%.
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elect%ical eF(i*ment9 (s(all se*a%ate %om t'e com*(te%
case9 w'ic' dis*las iewa+le images gene%ated + a
com*(te% wit'o(t *%od(cing a *e%manent %eco%d.
e6board
<n com*(ting9 a 0e+oa%d is an a%%angement o +(ttons t'at eac' co%%es*ond to a
(nction9 lette%9 o% n(m+e%.
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*oint at9 clic0 on9 and sometimes d%ag o+Gects on sc%een in a g%a*'ical (se% inte%ace (sing a
*ointe% on sc%een..
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Ot2er co(-o)e)t.
Ma.. .tora4e
!ll com*(te%s %eF(i%e eit'e% i=ed o% %emoa+le sto%age o% t'ei% o*e%ating sstem9
*%og%ams and (se% gene%ated mate%ial.
o%me%l t'e /H inc' and 3I inc' lo** d%ie we%e t'e *%inci*al o%ms o %emoa+le
sto%age o% +ac0(* o (se% iles and dist%i+(tion o sotwa%e.
!s memo% siJes inc%eased9 t'e ca*acit o t'e lo** did not 0ee* *ace t'e Ki* d%ie and
ot'e% 'ig'e%8ca*acit %emoa+le media we%e int%od(ced +(t nee% +ecame as *%ealent as t'e
lo** d%ie.
! U#L las' d%ie toda *e%o%ms m(c' o t'e data t%anse% and +ac0(* (nctions
o%me%l done wit' lo** d%ies9 Ki* dis0s and ot'e% deices.
Co(-,ter co((,)%cat%o).• <nte%nal modem ca%d
• odem
• ,etwo%0 ada*te% ca%d
• Ro(te%
Co((o) -er%-2eral. a)d ada-ter card.
• eadset
• Mostic0
• ic%o*'one
• P%inte%
• #canne%
• #o(nd ada*te% ca%d as a se*a%ate ca%d %at'e% t'an located on t'e mot'e%+oa%d• #*ea0e%s
• We+cam
• LAN Card – is a network interface card. This
is a computer circuit board or card that is
installed in a computer so that it can be
connected to a network.
• Modem -(Modulator-Demodulator) The
modem is a device that allows a givencomputer to share data or otherwise a
device which let computers exchange
information
• USB – Universal Serial Bus, a hardware
interface for low-speed peripherals such as
the keyboard, mouse, joystick, scanner,
printer and telephony devices.
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• Scanner- it is an input device that read text
or illustration printed on paper, translates
the information into a form that a computer
can use.
• Printer -it is a piece of hardware that
produces a paper copy (also known as
‘hardcopy’) of the information generated by
the computer.
•
RAM –Random Access Memory, is a primary memory. This memoryis used inside the computer to hold programs and data while it is
running.
• BIOS – Basic Input/Output System, chip that controls the most basic
functions of the computer and performs a self-test every time you turn
it on.
•
Flash drive–RAM that can retain data without electrical power. It is widely used
for BIOS chips and for digital camera and
digital music storage.
• Video Camera -camera using videotape: a
camera that records onto videotape
Self Check 2.2-1
Give the name of each numbered computer components.
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Answer Key
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1. #canne%
2. CPU ?ic%o*%ocesso% @
3. P%ima% sto%age ?R!@
4. E=*ansion ca%ds ?g%a*'ics ca%ds9 etc.@
/. Powe% s(**l
6. O*tical disc d%ie
B. #econda% sto%age ?a%d dis0 @
. ot'e%+oa%d
. #*ea0e%s
1. onito%
11. #stem sotwa%e
12. !**lication sotwa%e
13. -e+oa%d
14. o(se
1/. E=te%nal 'a%d dis0 16. P%inte%
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TASK SHEET 2.2-1
T%tle & Inventory of Computer Parts
Performance Objectives:
Given a complete set of personal computer you are going to make an
inventory of computer components bases on the given template.
S,--l%e. & UTP Cable, RJ 45
Tool.3E1,%-(e)t &
Complete set of PC with peripherals
Ste-.3 Proced,re&
1.Prepare the given template
2.Make an Inventory of the components and peripherals of the given pc.
3.Let your trainer check your work.
A..e..(e)t Met2od&
Demonst%ation 9 Pe%o%mance C%ite%ia c'ec0list
Template
TR!<,EE# ,!E
TR!<,ER# ,!E
NU!"<<C!T<O, COPUTER !RDW!RE #ER<C<,A ,C <<
D!TE
T<E
<,E,TOR O PC COPO,E,T#
,!E #PEC<<C!T<O, NU!,T<T RE!R-#
Did t'e T%ainees oe%all *e%o%mance meet t'e %eF(i%ed
eidence;standa%d> es ,o
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T%ainees #ignat(%e Date$
T%aine%s #ignat(%e Date$
PERFORMANCE CHECKLIST
Performance Criteria
Did you… Yes No
1. Listed down all computer components and peripherals
2. Identified the specifications of different components
3. Applied safety precautions during the task.
4. Used and filled up the given template correctly
5. Wrote the exact quantity.
6. Gave remarks correctly.
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Job Sheet 2.2-1
T%tle & Upgrade and Repair Operating System
Performance Objectives:
Given a working personal computer you are going to repair &
upgrade the previous operating system to XP or Higher.
S,--l%e. & Windows XP Installer or higher
• Tool.3E1,%-(e)t & Working PC
Ste-.3 Proced,re&
1.Insert the Windows XP CD. Select Start > Run.
2.In the Run box, where D is the drive letter for the CD-ROM, type
D:\i386\winnt32 and press Enter. The Welcome to the Windows XP
Setup Wizard displays.
3.Choose Upgrade to Windows XP and click Next. The License
Agreement page displays.
4.Read the license agreement and click the button to accept this
agreement.5.Click Next. The Upgrading to the Windows XP NTFS File System page
displays.
6.Follow the prompts and complete the upgrade. When the install is
complete, the computer will restart.
A..e..(e)t Met2od&
Demonst%ation wit' F(estioning 9 Pe%o%mance C%ite%ia c'ec0list
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Performance Criteria Checklist 2.2-1
CRITERIA
Did you…
Yes No
Started the computer properly
Inserted the XP Installation CD
Ran XP Installer
Selected upgrade option
Followed the prompts and completed the upgrading process
Upgraded the computer properly
Installed all necessary drivers
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INFORMATION SHEET 2.2-2Software Packages and Use of Application Programs
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to identify and
Software Packages and Use of Application Programs.
Software is the component of a computer system which refers to the
set of instructions written in a code-that computers can understand and
execute. Another name for this set of instructions is program.
Three Types of Software
1.System Software
2.Application Software
3.Programming Language
System Software. This software tells the CPU what to do, a more common
term is Operating System (OS). The most popular OS in use for PCmicrocomputer is Microsoft’s MS DOS. DOS for short is a collection of
various programs that help control your PC. Other operating systems are
Microsoft Windows (from the early Windows 95 and 98 to the current
windows Vista, OS 2, MAC OS, Unix, Linux and Apple’s OS 9.
Application Software. This is designed and written to perform specific
personal, business, or scientific processing tasks, such as payroll,
processing, human resource management, or inventory management.
Common Application software are the following:
• Word Processor – This serves as an electronic typewriter and even
more. With word processors, the user can easily produce quality
documents like memos and reports. Popular word processors include
MS Word and Word Perfect.
• Spreadsheets- These are programs that simulate a paper divided into
rows and columns, where values can be placed. These are used for
advanced numerical analysis and calculations. Some of the more
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common spreadsheet programs are Lotus 1-2-3 and, Ms Excel and
Open Calculate.
• Database Programs – These serve to collect a structured collection of
data, which can later be managed and manipulated.
• Presentation Software – These are programs that allow users to
create electronic presentation for reports and other functions.
• Desktop Publishing Software – This allow the user to create page
makeup and do simple typesetting to produce various materials, such
as books pamphlets, reports, and booklets. Example of DTP software
are MS Publisher, and PageMaker.
• Reference Software – These are electronic versions of various
references such as encyclopedia, almanacs, atlases, dictionaries,
thesauri, and the like.
• Graphics Programs – These allow the creation and manipulation of
graphics, images, objects, and pictures. Some of the common
graphics programs are CorelDraw, Photoshop, and Computer Aided
Design (CAD)
• Educational Software – These include tutorials and electronic
lessons that give students knowledge or training in a particular
subject or skill, such as Math or Science or in gardening or cooking.
• Computer Games – These are programs that simulate real games or
provide entertainment and adventure to users.
• Network Software – These are programs that make it possible for
computers in different areas to be connected, allowing their users tocommunicate with each other.
• Language Software – These provide programmers with the necessary
tools to write programs and instructions to computer.
Programming Software. Programmers use this software for making
computer programs. Programming software is a tool to make software using
different programming languages.
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SELF-CHECK 2.2 -2
A. TRUE OR FALSE. Write T if the statement is true and correct and F ifit is not. Use a separate sheet of paper in answering.
______ 1. Word processors are used to create special movie effects.
______ 2. Systems software tells the CPU what to do.
______ 3. Software refers to the set od instructions that computer can
understand and execute.
______ 4. Reference software includes tutorial and electronic lessons that
give students knowledge or training in a particular subject or skill.______ 5. Graphics Program allow the users to execute electronic
presentations for reports and other functions.
B. Discuss briefly the three types of software.
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ANSWER KEY 2.2-2
A. True or False
1. False
2. True
3. True
4. False
5. False
B.
System Software – tells the Central processing unit what to do.
Application Software – This is designed and written to perform specific
personal, business, or scientific processing tasks, such as payrollprocessing, human resource management, or inventory management.
Programming Software - to make software using different
programming languages.
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INFORMATION SHEET 2.2-3
Techniques for Diagnosing Computer System
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to use
Techniques for Diagnosing Computer System
Techniques for diagnosing computer system
1.Computer Diagnosis
2.Rules In Diagnosing Computer System
3.Factors Causing Computer Failures and Defects4.Problem Isolation
5.Component Isolation
Computer Diagnosis
Sometimes when the problem with a system is not totally apparent
and the problem may be intermittent, using a basic common
diagnostic procedure may help determine what is wrong. This
procedure has a number of steps that, if followed each time, can be of
help.
Rules in Diagnosing Computer System
1.Know the facts
• Educate oneself on all aspects and operation of computer
parts.
• Continuous learning on computer technology.
2.Use your common sense
3.Focus on Field Replaceable Units
• Identify the different types of FRU that can be used for
replacement or subassembly.
4.Proper assembly and disassembly
Factors Causing Computer Failures and Defects
1.Peopleware
2.Firmware
3.Software
4.Hardware
5.Static(ESD)6.Electricity
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Peopleware
• Untrained personnel would probably damage programs in PC.
Firmware
• Programs or software burnt in chips may be corrupted.
Software
• Corrupted operating systems would cause the system to fail.
Hardware
• Defective hardware components would lead to computer malfunction.
• Hardware conflicts and viruses can hinder your computers performance.
ESD (Electro Static Discharge)
• Electro static discharge can easily damage sensitive components in your
computer.
Electricity
• Incoming supply from AC outlet must be regulated, power surges can
damage computer units.
Problem IsolationProblem isolation is a detective work in which you need to determine
what is out of the ordinary by making detailed observation of what is not
working normally and record any information as you proceed. The
information you will be able to gather will help diagnose your computer. You
need to observe wisely. Look for any abnormalities in the unit, any change in
smell or foreign smell, listen to all the sounds, and error codes.
Component Isolation
This section will aid in determining components in your system which
are failing. First, most systems have 3 major components; monitor, system
unit, and printers. Some have multiple external devices. To troubleshoot,
you need to isolate major components which are failing to operate.
Figure 1. Computer system connections
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Self Check 2.2-3
Enumerate the following items below:
1.Factors Causing Computer Failures and Defects.
2. Techniques for diagnosing computer system.
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Answer Key
1. Factors Causing Computer Failures and Defects
1.Peopleware
2.Firmware
3.Software
4.Hardware
5.Static(ESD)
6.Electricity
2. Techniques for diagnosing computer system
1.Computer Diagnosis2.Rules In Diagnosing Computer System
3.Factors Causing Computer Failures and Defects
4.Problem Isolation
5.Component Isolation
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TASK SHEET 2.2-2
T%tle & Faulty Connection of Computer Peripherals
Performance Objectives:
Given with the different equipments, identify Faulty Connection of
Computer and Peripherals
S,--l%e. & UTP Cable, RJ 45
Tool.3E1,%-(e)t & System unit
Monitor
KeyboardMouse
Printer
Power plugs
AVR
Ste-.3 Proced,re&
1.Prepare materials and tools needed2.Install system units and peripherals
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3.Identify and fixed faulty connections
4.Power on the unit.
5.Apply troubleshooting if necessary.
6.Check the functionality of each computer peripherals
7.Let your trainer check your works.
A..e..(e)t Met2od&
Demonst%ation9 Pe%o%mance C%ite%ia c'ec0list
Performance Criteria Checklist
CRITERIA
Did you…
YES NO
1. Followed sequence of steps in diagnosing.
2. Observed safety precautions.
3. Performed standard procedures in diagnosing.
4. Identified Errors & Symptoms.
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LEARNING
OUTCOME 3
REPAIR DEFECTS IN COMPUTER SYSTEMS AND
NETWORKS
CONTENTS&
• *roper repairing7replacing procedure) o, di,,erent component)
• =iring tec6ni<ue)
• *ower )upplie)
• Determining de,ective component)
• @a)ic networ2ing
ASSESSMENT CRITERIA&
$. De,ective component) properl' replaced and corrected#. Error in networ2) clearl' identi,ied and repaired in line wit6 )tandard
procedure)1. De,ective component) identi,ied and )eparated to ot6er component)
CONDITION&
T%ainees m(st +e *%oided wit' t'e ollowing$
3.WOR-P"!CE "OC!T<O,
4. Tools, Materials and Equipment and Facilities Screw driver) 5a))orted8 *lier) 5a))orted8Soldering iron =renc6e)>tilit' )o,tware Server)=or2)tation) *rinter)*rocedure) and guideline) Multite)ter Networ2 ca"le te)ter Crimping tool)
References:
• Andres Sr., Antonio M. Introduction of Computer. Fully Illustrated,
Valenzuela City; May 2003 World Class Publishing and Packaging
• Sto. Domingo, Josephine C.,Learning Windows XP and Internet the Easy Way Computers - The Easy Way
E7ALUATION METHOD&
• Demonst%ation & O%al N(estioning
• W%itten Test
LEARNING OUTCOME SUMMARY
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Learning Experiences
Learning Outcome 3
REPAIR DEFECTS IN COMPUTER SYSTEMS AND NETWORKS
Learning Activities Special Instructions
1. Read information sheet 2.3-1
” Proper Replacement of
Components or Parts”
If you have some problem on the
content of the information sheet
don’t hesitate to approach your
facilitator.
If you feel that you are nowknowledgeable on the content of
the information sheet, you can now
answer self check provided in the
module.
2. Answer self-check 2.3-1 Compare your answer to the
answer key
2.3-1. If you got 100% correct
answer in this self-check, you can
now move to the next informationsheet. If not review the information
sheet and go over the self-check
again.
3. Read information sheet 2.3-2
“Adjustments, Modifications
and Upgrading”
If you have some problem on the
content of the information sheet
don’t hesitate to approach your
facilitator.
If you feel that you are now
knowledgeable on the content ofthe information sheet, you can
answer self check provided in the
module.
4. Answer self-check 2.3-2 Compare your answer to the
answer key
2.3-1. If you got 100% correct
answer in this self-check, you can
now perform task sheet 2.3-1. If
not review the information sheet
and go over the self-check again.
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/. Do Task Sheet 2.3-1
Hardware Upgrade
Compare your work to the checklist
and let your trainer check it. If you
got 100% correct answer in this
task, you can now move to the next
information sheet. If not review theinformation sheet and go over the
task again.
6. Read information sheet 2.3-3
“Determining Defective
Components”
If you have some problem on the
content of the information sheet
don’t hesitate to approach your
facilitator.
If you feel that you are now
knowledgeable on the content of
the information sheet, you cananswer self check provided in the
module.
B. Answer self-check 2.3-3 Compare your answer to the
answer key
2.3-1. If you got 100% correct
answer in this self-check, you can
now perform Job Sheet 2.3-1. If not
review the information sheet and go
over the self-check again.
. Perform Job Sheet 2.3-1
PC Troubleshooting
Compare your work to the
Performance Checklist. If you got
100% correct answer in this self-
check, you can now move to the
next learning Outcome. If not
review the information sheet and go
over the self-check again.
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IN%ORMATION SHEET &'()*
Proper Replacement of Components or Parts
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to follow Proper
procedures in Replacement of Components or Parts.
Computer Parts Replacement
Replacing computer parts and peripherals you need to consider the following
factors:
1.Compatibility of the component or part
2.Consider the component specification
3.Components form factor
Compatibility of the Component
When replacing computer parts you should check if it is compatible with
your unit. Double check on your computer manual if the component you are
replacing is compatible or not with the unit because this may lead to system
crash.
Component Specification
This focuses on the specification of the component. Check if the voltagerating, current rating, memory size and frequency matches your computer
unit.
Form factor
The components’ manufacturer should be considered. Check if the unit you
are trying to repair or upgrade is generic or branded units. Branded units
have their own set of components compatible only to their units, while
genetic types can be used only to generic type of units.
List of Components Commonly Replaced in a Computer System
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Memory- is technically any form of electronic storage; it is used most often
to identify fast, temporary forms of storage. It is commonly called RAM
(Random Access Memory).
Video Cards- is also referred to as agraphics accelerator, is an item of
personal computer hardware whose function is to generate and output
images to a display.
Network Interface Card – is also known as LAN card. A PC interface to
network cabling. It is a piece of computer hardware designed to allow
computers to communicate over a computer network
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Hard disk drive – is a fixed computer storage medium
Motherboard – is also known as the mainboard. It contains circuits that
perform various functions.
Processor – is also known as CPU or the Central Processing unit
General Safety Tips and Reminders
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Observe good housekeeping in the area of the machines during and
after maintenance.
Place removed covers and other parts in a safe place, away from all
personnel, while you are servicing the machine.
Dress for the Job
Keep your tool case away from walk areas so that other people will not
trip over it.
Do not wear loose clothing that can be trapped in the moving parts of
a machine. Ensure that your sleeves are fastened or rolled up above
your elbows. If your hair is long, use hair net or hair cap.
Insert the ends of your necktie or scarf inside clothing or fasten it witha nonconductive clip, approximately 3 inches from the end.
Do not wear jewelry, chains, metal-frame eyeglasses, or metal
fasteners for your clothing.
After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn out or defective.
Finally, reinstall all covers correctly before returning the unit to the
customers.
Electrical safety
Electric current from power, telephone, and communication cables can be
hazardous. To avoid personal injury or equipment damage, disconnect the
attached power cords, telecommunications systems, networks and modems
before you open the server/workstation covers, unless instructed otherwisein the installation and configuration procedure.
Precautions
Disconnect all power before:
− Performing a mechanical inspection
− Working near power supplies
− Removing or installing main units
Before starting work on the machine, unplug the power cord.
Never assumethat power has been disconnected from a circuit. First,checkthat it has been powered-off.
Remember:Metal objects are good conductors
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Always look carefully for possible hazards in your work
− Moist floors
− Non-grounded power extension cables
− Power surges.
If an electrical accident occurs:− Use caution
− Switch off power
− Send another person to get medical aid
Safety Inspection Guide
1.These steps will help you to identify potentially unsafe conditions on
these products:
Check exterior covers for damage (loose, broken, or sharp edges)
Power-off computer. Disconnect the power cord.
The power cord should be the appropriate type.
Insulation on the power cord must not be frayed or worn out.
Remove the cover.
Check for any obvious alteration. Use good judgment as to the
safety of any alterations.
Check for worn out, frayed or pinched cables.
Check that the power-supply cover fasteners (screws or rivets)
have not been removed or tampered with.
Self Check 2.3-1
Place your answer on a separate sheet.
1. Give the functions of each component.
1.Memory2.Video card
3.NIC
4.Motherboard
5.HDD
2. Factors to consider when replacing a component.
1.
2. 3.
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Answer Key
1. Give the functions of each component.
1.Memory- is technically any form of electronic storage; it is used most
often to identify fast, temporary forms of storage. It is commonly called
RAM (Random Access Memory).
2.Video card - is also referred to as agraphics accelerator, is an item of
personal computer hardware whose function is to generate and output
images to a display.
3.NIC - is also known as LAN card. A PC interface to network cabling. It
is a piece of computer hardware designed to allow computers to
communicate over a computer network
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4.Motherboard - is also known as the mainboard. It contains circuits
that perform various functions.
5.HDD - is a fixed computer storage medium
2. Factors to consider when replacing a component.
1. Compatibility of the component or part
2.Consider the component specification
3.Components form factor
INFORMATION SHEET 2.3-2
Adjustments, Modifications and Upgrading your PC
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to
Adjust, Modify and Upgrade your PC
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Upgrading Your Computer Components
To upgrade means to change some parts with faster and better performing
ones. These parts may even cost less and more powerful.
Commonly Upgraded Computer Parts:
Monitors- replaced old CRT monitors to new LCD
monitors.
Optical drives- old cd-rom drives are commonly
replaced with DVD-ROM and DVD writers.
Hard Drives- small capacity hard drives are replaced with
faster and high capacity hard drives.
Keyboards and mouse- keyboards and mouse are commonly replaced
with optical mouse and wireless keyboards.
RAM (Random Access Memory)- upgrading the computer’s memory or
RAM speeds up the performance of the computer
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Video cards- upgrade computer’s graphics card to improve the computers
performance in terms of graphics and games.
Processors- replacing the possessors increases the data processing
speed.
Modem- installing a modem enables your computer to connect to the
internet.
How to Speed up the Computer
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1. Defragmenter utility: Automatically analyzes the empty disk space on the
hard disk and defrag all scattered files.
2. Shutdown Unnecessary programs: Close all unwanted programs at the
Windows startup and this will automatically increase the windows loading
time and speed of the computer will also be increased.
3.Increased memory: increasing the memory in the system will result to
exceptional speed of your computer.
4. Disk Cleanup: You can
delete unwanted programs and
files from your computer and
this will be helpful in
increasing the speed.
Clo.e t2e
,))ece..ar6
-ro4ra(.
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5. Empty Recycle Bin: Delete all the files and
folders from the recycle bin and you will get the
space of C drive for reusability.
Memory Upgrade
To make your computer faster you can upgrade its memory, here are the
steps in upgrading your computers memory
1. Remove the memory modules from the
slot.
2. InFig 1.2 the notches we have marked as
A are used for the ejector clip on the DIMM
slot.
The notches we have marked asB are used toalign the memory module with the DIMM slot
keyC as shown inFig 1.3.
InFig 1.3 you can see the ejector clips (D),
using your finger, push these into the down
position as shown inFig 1.3 this allows the
memory to be inserted.
3. Now you are ready to install the module,ensuring the notches line up with the keys
gently but firmly push the memory into the
slot until it is seated fully(seeFig 1.4), the
ejector clips should rise to the vertical
position as shown inFig 1.5.
4. Now your memory is installed. Be sure you
haven't loosened any cables while working and
also ensure that the memory module isfully seated and the ejector clips are in the vertical
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position.
Video card Upgrade
Installing the video card
Next take the video card (hold it by the edges) and line it up with the slot
paying careful attention to the alignment notch, when it is aligned correctly
press gently but firmly until the card is seated fully and evenly into the slot
(seefig 1.3).
When you are happy that the card is firmly in place, insert the fixing screw
fig 1.4 and check to make sure you haven't loosened anything during
installation.
Replace the case cover and reconnect the mains power.
When you reboot your machine Windows (or other OS) should find the card
automatically, it may then ask you to insert the disk/CD that came with
your video card, insert the CD and follow the on-screen instructions to
install the video card driver.
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Hard Drive Upgrade
The first thing to do (after removing the case covers) is to locate the drive
bay where the hard drive will go (seefig 1.3 below).
In our example infig 1.3 above we have adrive already in the bay so you can see more
clearly where it should be situated.
The next step is to attach the IDE and power cables.
In fig 1.4 below you can see a standard IDE Cable, note there are 3
connections (notice the difference in distance between the connectors),
connection A plugs into the motherboard and then the slave and master
connections are used for IDE devices such as hard drives, if you are only
installing one drive or the new drive is to be the master then use the master
connector, if the drive is to be the slave
then use the slave connector.
The IDE cable will be marked down one
side with a red or black strip, this denotes Pin 1, match this with the Pin 1
indicator on the back of the hard drive.
The power cable you will find in your case attached
to your power supply.
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Self Check 2.3-2
Write down the process of upgrading the following component:
1.
2.
3.
4.
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5.
Answer key
1.Monitors- replaced old CRT monitors to new LCD monitors.
2.Optical drives- old cd-rom drives are commonly replaced with
DVD-ROM and DVD writers.
3.Keyboardsare commonly replaced with wireless keyboards
4.Hard Drives- small capacity hard drives are replaced with faster
and high capacity hard drives.
5.Mouse- commonly replaced with optical mouse
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TASK SHEET 2.3.1
T%tle & Hardware Upgrade
Per'or(a)ce Ob*ect%+e & Given the tools and materials, upgrade your
computer by installing a network card.
S,--l%e.3Tool. & Philip Screw Deriver
Anti-static wrist strap
Anti-static mat
Tool.3E1,%-(e)t & Working Computer
Network Card
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Ste-.3 Proced,re&
1.Prepare the needed tools, supplies & materials
2.Install the network card
3.Start the computer
4.Make necessary configuration
5.Test the functionality of the network card.
A..e..(e)t Met2od&
Demonst%ation9 Pe%o%mance C%ite%ia c'ec0list
Per'or(a)ce Cr%ter%a C2eckl%.t
CRITERIA
Did you…
Yes No
1. Observed safety precautions
2. Used appropriate tools in upgrading
3. Made necessary improvement and adjustment in
terms of upgrading.
4. Installed driver properly.
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INFORMATION SHEET 2.3-3
Determining Defective Components
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to Determining
Defective Components
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Testing Procedures
• Deciding When to Test the System. Identify computer symptoms
and defects
• Preparing to Test the System . It’s recommended that you should
not plug your computer and monitor directly to a wall outlet. Rather,
you should purchase a UPS (uninterruptible power supply). The UPS
serves as a surge protector to prevent your system from being
damaged if a power spike is delivered to it and when power will fail
unexpectedly. The UPS gives you time to save your work and properly
shut down your system. If a system is turned off and back on rapidly,
it’s probably not good for the system. A very short power drop could
mimic this effect and could be hard on both the computer and themonitor.
Test Your Computer Memory RAM
I 'ant to &o t+is,
MostComputer Memory comes with a life time warranty from the
manufacturer but this can be very inconvenient. You can return memory
easily to the seller in the 1st 2 weeks but most problems show themselves
much later and it always seems to happen when you need your computer
the most. Learn how to detect problems in the 1st 8 hours after you install
memory and save yourself from headaches and inconvenience down the
road.
Memory is an easy upgrade but how do you know its running at the
advertised speed? Do you know for sure its running error free? Memory can
arrive from the seller and have a defects that won't be seen for weeks or a
months. But then it happens. Blue screens, freezing, memory errors,
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spontaneous reboots. All signs of defective memory. Read on to learn how to
protect yourself from buying bad memory.
Instructions
Things You'll Need:
• New memory
• CD burner
• Blank CD-R or CDRW
1.We will assume you know how to buy the right memory. If not, visit
my article on buying the right memory.
2.Shut down your PC, unplug your computer, and Open the cover.
TIP: If you have toggle switch on the back of your power supply, you
can add more safety by turning the switch off and leaving the
computer plugged into the wall outlet. Yes, leave it plugged with the
hard power switch off. This provides an excellent ground to your
computer with no actual power applied.
3. we have 2 sticks of new memory rated for our computer.
Lets assume our computer has 4 slots. 2 slots are filled, 2 are empty.
With the case open, open the levers on the side of the installed memory
sticks and remove them. Put them in a safe place.
4. Insert the new memory sticks in the same place the old sticks were and
lock the levers. The reason we are doing these extra steps is so we can
test the new memory. Leaving in the old memory can affect the new
memory's speed reading or even errors in the old memory will not be
clearly the fault of the old memory.
5. Turn on the power and boot up. Watch for the prompt to access SETUP
or BIOS. Most popular keys for this are DEL, F2, or F10.
6. Inside the BIOS or Setup screen, look for the section called memory.
Check to see the memory is running at the speed you purchased and
displays the full amount you purchased. Exist setup and allow computer
to boot up fully.
7. Download Memtest86+ 2.11. Its free and supports DDR2 and DDR3
memory. Unzip the file and create a CD using the ISO file using your
favorite cd burner program. This is a bootable CD.
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8. Reboot the PC and insert the CD you just made before the post screen is
done. Assuming your PC is set to boot from the CD first,(most are), the CD
will start up the MEMTEST program and start running. This will run over
and over. It will also count how many times its run and the number of errors
it encounters. The number of errors should be zero.
9. Let it run for up to 8 hours. Once you are satisfied, exit the program
using the legend on screen. Remove the CD, and turn off the computer.
10. You now know you have reliable memory that will likely last for years to
come
How to Tell if a Motherboard Is Defective
I 'ant to &o t+is,
The motherboard is the backbone of yourcomputer as it is the piece that all
of the other components are connected to. If yourcomputer will not boot up
properly or power on at all the problem may potentially lie with the
motherboard. Because so many other components are connected to the
motherboard you will need to troubleshoot each other part first.
Instructions
Things You'll Need:
• Screwdriver
• Replacement processor
• Replacement RAM modules
• Replacement video card
1.Turn the computer off and then remove the power cable from the
electrical wall outlet. Plug a power cable from a different electrical device
into the outlet and power it on so that you can rule out the outlet as your
problem. Connect the computer's power cable back into the outlet.
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2.Power the computer back on and place your hand behind the case near
the power supply. Wait a few moments to see if any air is pushed out of
the power supply by the cooling fan. Replace the power supply instead of
the motherboard if the fan is not working.
3.Shut down the computer again and pull out all of the cables from the
back side of the case. Remove any other devices you have connected to
the front ports on the computer such as a USB printer or jump drive.
4.Set down the computer so that the left side panel is facing towards you.
Unlock the side panel from the computer case by removing the case
screws if there are any. Twist of the thumbscrew or pull up on the metal
holding latch if the computer does not use case screws.
5.Remove the screws holding any expansion cards to the case and then pull
them off the motherboard. Pull out all of the cables running from the
motherboard to the power supply and drive bays. Pull out the screws
holding the motherboard to the case. Pull the motherboard straight up
out of the case and set it down carefully on a flat non-metal surface.
6.Check to make sure that there is no physical damage to the motherboard
such as bent pins or burnt transistors. Purchase a new motherboard and
place it back in the case if there is any visible damage.
7.Remove the screws holding the power supply to the case and slide it out
of the drive bay. Set it down near the motherboard and connect the SATA
cable from the motherboard to the power supply. Connect the power cable
from the power supply to a wall outlet. Plug cable from the computer's
monitor into the corresponding port on the motherboard.
8.Remove the RAM modules and replace them with another set. Press down
the power button on the motherboard with a screwdriver or another flat
object. Wait to see if the computer loads up without error, which will
indicate that the problem is with the RAM modules instead of with the
motherboard.
9.Power the motherboard back off and replace the processor with a
different one. Turn the motherboard back on and see if the system boots
up normally, which will indicate a defective processor.
10.Turn the motherboard off and replace the video card with a different one.
Power the motherboard on and see if the system boots up, which will
indicate a defective video card.
11.Replace the motherboard if the system still will not boot up after all of the
other components have been checked.
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How to Know If a Sound Card Is Bad
I 'ant to &o t+is,
You turn on yourcomputer one morning, hoping to listen to the morning
news, but there's one tiny little problem. You're not getting any sound out of
the speakers. A few simple steps will determine what is wrong.
Instructions
Things You'll Need:
• Extra set of speakers
• Another computer
• Internet access
1. Try restarting the computer to see if it does it again. It may be a freak
incident.
2. If that doesn't work then check to make sure that
everything is plugged in and is turned on. Thisincludes checking the wires from the speakers to the
computer and making sure the speakers have power.
Also check to see if the volume isn't muted or turned
down extremely low.
3. Check to see if the driver is working. Click the start menu, right click
on the computer icon, and select properties. On the left
hand side under task select device manager and select
sound, video andgames controller. Double click on your
sound device to bring up the properties page. From here
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it will tell you if your sound card is working properly or not. If it isn't try
reinstalling the sound card driver. If the sound card is not showing up at
all, then it might be defective.
4. The next step is to rule out the speakers. Either take them and hook
they up to another computer to see if they work or you can take different
speakers and hook it up to the computer to see if they work. If they do
work chances are the card is defective.
5. Before ruling out the sound card is toast, try rolling Windows back to
an earlier date by using System Restore which is located under
accessories > System Tools. Restore the computer to a few days before the
problem started to happen.
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Self Check 2.3-3
TRUE OR FALSE: Write T if the statement is True and F if the statement is
False.
____1.It’s recommended that you should plug your computer andmonitor directly to a wall outlet.
____2.The motherboard is the backbone of yourcomputer as it is the
piece that all of the other components are connected to.
____3.If yourcomputer will not boot up properly or power on at all the
problem may potentially lie with the keyboard.
____4.You must turn the computer off before removing any component
from the motherboard.
____5.The first step in troubleshooting your PC is to restart the system.
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Answer Key
1.F2.T
3.F
4.T
5.T
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JOB SHEET 2.3-1
T%tle & PC Troubleshooting
Performance Objectives: Given the necessary tools, materials and
equipment, perform PC testing and
troubleshooting.
S,--l%e. & Manuals
Tool.3E1,%-(e)t & Defective Computer Unit, Automatic Voltage
Regulator (AVR), Power Cables, Sound card, Video
card, Screw Diver
Ste-.3 Proced,re&
1.Prepare the needed tools, supplies and materials.
2.Test and find defective component of the given pc.
3. Replace the defective component.
4.Test the functionality by starting computer.
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A..e..(e)t Met2od&
Demonst%ation9 Pe%o%mance C%ite%ia c'ec0list
PERFORMANCE CHECKLIST
Criteria
Did you… YES NO
1. Plugged in the power cable properly.
2. Connected AVR to the Power source properly.
3. Carefully observed safety precautions.
4. Identified and replaced defective component.
5. Replaced defective devices successfully.
6. Repaired defective PC successfully.
7. Observed OHS Procedures.
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LEARNING
OUTCOME 4 TEST SYSTEMS AND NETWORKS
CONTENTS&
• (uideline) ,or te)ting computer )')tem
• Advance networ2ing
•Computer )')tem) operation
• Digital electronic)
• Communication)
ASSESSMENT CRITERIA&
#. Computer )')tem) and networ2) are te)ted in accordance wit6 t6e ;o"re<uirement)
1. In,ormation are )6ared ,rom one computer to anot6er a) primar' re<uirementin computer networ2ing
3. eport) are prepared and completed according to t6e compan' re<uirement)
CONDITION&
T%ainees m(st +e *%oided wit' t'e ollowing$
1.WOR-P"!CE "OC!T<O,
2. Tools, Materials and Equipment and Facilities
Server) =or2)tation)*rinter) *rocedure) and guideline) ,or te)tingNetwor2 ca"le te)ter Hu")*aper) 5,or report generation8 AC line 5to )uppl' power8
References:
• Andres Sr., Antonio M. Introduction of Computer. Fully Illustrated,
Valenzuela City; May 2003 World Class Publishing and Packaging
• Sto. Domingo, Josephine C.,Learning Windows XP and Internet the Easy
Way Computers - The Easy Way
E7ALUATION METHOD&
• Demonst%ation & O%al N(estioning
• W%itten Test
LEARNING OUTCOME SUMMARY
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Learning ExperiencesLearning Outcome 4
TEST SYSTEMS AND NETWORKS
Learning Activities Special Instructions
1. Read information sheet 2.4-1 ”
Testing Computer System”
If you have some problem on the
content of the information sheet
don’t hesitate to approach your
facilitator.
If you feel you are now
knowledgeable on the content of
the information sheet, you can now
answer self check provided in the
module.
2. Answer self-check 2.4-1 Compare your answer to the
answer key 2.4-1. If you got 100%
correct answer in this self-check,
you can now perform task Sheet
2.4-1. If not review the information
sheet and go over the self-check
again.
3. Perform Task Sheet 2.4-1
Testing a Computer Unit
Compare your work to the
performance checklist. If you got
100% correct answer in this task,
you can now move to the next
information sheet. If not review the
information sheet and go over the
task again.
4. Read information sheet 2.4-2
“Enumerating unpredicted events”
If you have some problem on the
content of the information sheet
don’t hesitate to approach your
facilitator.
If you feel that you are now
knowledgeable on the content of
the information sheet, you can now
do Task Sheet 2.4-2 provided in the
module.5. Do Task Sheet 2.4-2 Compare your work to the checklist
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Error codes
and let your trainer check it. If you
got 100% correct answer in this
task, you can now move to the next
self-check. If not review the
information sheet and go over thetask again.
6. Answer self-check 2.4-2 Compare your answer to the
answer key 2.4-2. If you got 100%
correct answer in this self-check,
you can now move to the next
Competency. If not review the
information sheet and go over the
self-check again.
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IN%ORMATION SHEET &'+)*
Testing Computer System
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to Test Computer
System
Three Major Components of Computer System:• Hardware
• Software
• Firmware
Test Your Hardware
Checking your computer hardware and its peripherals
1.Computer Monitor and its peripherals
Monitor and interface cables
Video card
Monitor power cable
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2.Keyboard and Mouse• Keyboard connector
• Mouse Connector
3.I/O port and devices
• Connection between the I/O port and the peripheral device
• A faulty cable between the I/O port and the peripheral device
• A faulty peripheral device
• Incorrect settings in the System Setup program
• Incorrect settings in the system's configuration files
• Faulty I/O port logic on the system board
Monitor power
Keyboard connecter
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4.Power supply
• Power cord
• Fuse
Testing Your Software
Check the different software installed in the computer.
1. Operating system
• Run live updates for your operating systems to get the latest
patches and protection for your OS.
• Run registry scanners to check the OS registry configuration
Power su l
Fuse
Power cord
Power lu
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2. Application Software
• Check for live updates
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3. Anti-virus software
• Run anti-virus program
• Check for virus signature updates
•Check for spyware updates
Test Your Firmware
Firmware- a combination of hardware and software integrated on a chip.
How do you test your firmware?
Example: Check for the correct configuration on your firmware, you can
accomplish this by configuring the BIOS in the computer
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Sample Accomplishment Report Form
Task to be accomplished Status
Hardware component testing Workingproperly
Not workingproperly
Software testing Status
Working
properly
Not working
properly
Self Check 2.4-1Match the given peripheral devices to the following.
1.Computer Monitor
2.Keyboard and Mouse
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3.Power supply
Answer Key
1.Computer Monitor ---E
2.Keyboard and Mouse- C & D
!L C
D
E
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3.Power supply- A & B
TASK SHEET 2.4-1
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T%tle & Testing a Computer Unit
Performance Objectives:
Given the necessary tools, supplies and materials, test
the following computer peripherals and equipment with
the use of the tools provider. Document your testing with the use of an accomplishment form.
S,--l%e. 3Tool. & Multi-tester
Screw driver
Keyboard and mouse
Bond paper
Ruler and Pencil
E1,%-(e)t & Computer unit
Monitor
Power cables
Steps/ Procedures:
1.Prepare the necessary tools and materials.
2.Prepare observation checklist
3.Start the computer.
4.Test the different component of your PC.
5.Accomplish the observation checklist.
Assigned Task Condition
Hardware component testing Working
properly
Not working
properly
Computer monitor
Power supply
Keyboard
Mouse
A..e..(e)t Met2od&
Demonst%ation9 Pe%o%mance C%ite%ia c'ec0list
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Performance Criteria Checklist
CRITERIA
Did you…
Yes No
1. Followed sequence of steps in testing.
2. Observed safety precautions.
3. Used appropriate tools in testing.
4. Accomplished report are filled-up properly.
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INFORMATION SHEET 2.4-2Enumerating unpredicted events
Learning Objective:
After reading this INFORMATION SHEET, YOU MUST be able to identify and
Enumerating unpredicted events and errors in personal computer.
Error Beep codes
When a PC is first switched on or reset it performs a special diagnostic testcalled a POST (Power-On Self Test), to check all of the components in the PC
the POST program sends out a signal to each device initializing each device's
built-in self test procedure.
The POST test is a two stage process:
1. First it will check all of the basic components including among other
things the system clock, the processor, RAM, the keyboard controller and
the Video2. After the video has been tested the BIOS
will then indicate any errors encountered by
displaying either a numeric code or a text
message on the screen.
When a device fails the first part of the POST,
the BIOS will send a series of beeps from the PC's speaker (internal) to
inform the PC user that there is a problem, these beeps are coded allowing
the user to diagnose the troublesome component. When the POST has been completed successfully the PC will make a short
beep to let the user know everything is as it should be.
Three major brands of BIOS chip
1.AWARD BIOS
2.Phoenix BIOS
3.AMI BIOS
Each type of BIOS chip has it own error code
AMI BIOS ERROR BEEP CODES
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Indicator Error message Solutions
1 Beep
2 Beeps
3 Beeps
4Beeps
5Beeps
6 Beeps
7 Beeps
8 Beeps
9 Beeps
10 Beeps
11 Beeps
Memory refresh
failure
Memory parity error
Memory read/write
error
Motherboard timer
not functioning
Processor error
Gate A20/keyboard
controller failure
Processor exception
interrupt
Display memory
read/write failure
ROM checksum
error
CMOS shutdown
read/write error
Bad cache memory
Check memory
Check memory
Check memory
Replace
motherboard
Replace processor
Replace
motherboard
Replace processor
Replace video card
Replace BIOS
chip/Motherboard
Replace BIOS
chip/Motherboard
Replace cache
memory
Phoenix BIOS ERROR BEEP CODES
Phoenix BIOS beep codes are a series of beeps separated by a pause, for
example:
beep --- beep beep --- beep --- beep beep would be1-2-1-2
Indicator Error message Solutions
1-1-4-1
1-2-2-3
1-3-1-1
1-3-1-3
Cache error
BIOS ROM
Checksum
DRAM test rate
Keyboard controller
Check cache
memory
Check BIOS ROM
Check DRAM
Check keyboard
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1-3-4-1
1-3-4-3
1-4-1-1
2-1-2-3
2-2-3-1
test
RAM failure
RAM failure data
bits of low memory bus
RAM failure data
bits of high memory
bus
ROM copyright
notice
Test for unexpected
interrupt
controller
Check memory
Check memory
Check memory
Check ROM
AWARD BIOS ERROR BEEP CODES
Indicator Error message Solutions
One long beep and
two short beeps
Two short beeps
Video error
Non-fatal error
Replace video card
Reset RAM, Check
other components.
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TASK SHEET 2.4-2
T%tle & Error codesPer'or(a)ce Ob*ect%+e & Given the tools and equipment, identify the
different error code by removing the cards in
the computer unit
Tool.3S,--l%e. & Screw drivers
Anti-static wrist strap
E1,%-(e)t & Computer unit
Ste-.3 Proced,re&
1.Prepare necessary tools, materials and equipment.
2.Remove card and identify error code.
3.Record the result of your test
A..e..(e)t Met2od&
Demonst%ation wit' F(estioning 9 Pe%o%mance C%ite%ia c'ec0list
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Performance Criteria Checklist
You will be assessed using the following criteria
Evaluation:
CRITERIA
Yes No
1. Observed of safety precautions.
2. Used Appropriate tools in testing.
3. Identified the error.
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Self Check 2.4-2
Place your answers on a separate paper:
Answer the following questions
1.What does the acronym POST stand for?2.Three types of BIOS chip? Enumerate the three common brands of
Bios
Chip?
3.Identify the following error codes:
• 1-2-2-3
• 1-3-4-1
• 2-1-2-3
• 1-1-4-1
• 1-3-1-1
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Answer key 2.4-2
1. POST- Power On Self Test
2. BIOS brands
a.AMI
b.AWARD
c.Phoenix
3. Identify the error code:• 1-2-2-3= BIOS ROM checksum
• 1-3-4-1=RAM Failure
• 2-1-2-3=ROM copyright notice
• 1-1-4-1=Cache error
• 1-3-1-1=DRAM fresh rate
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<,#T<TUT<O,!" E!"U!T<O,
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demonst%ated
es ,o ,;!
$. 4ault) and error o, computer )')tem properl'determined.
8/18/2019 128971850 Module 2 Diagnose and Troubleshoot Computer Systems and Networks (1)
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#. Tool) 56ardware7)o,tware8 identi,ied in accordancewit6 it) u)e) and ,unction).
1. Sa,et' precaution) e)ta"li)6ed in accordance wit6wor2place procedure).
3. Component) or part) o, computer )')tem clearl'
identi,ied9. 4unction) o, t6e computer )')tem) e:plained
+. 4ault) and ,ailure) o, t6e computer )')tem)diagno)ed "a)e on t6e ;o" re<uirement)
. De,ective component) properl' replaced andcorrected
/. Error in networ2) clearl' identi,ied and repaired in linewit6 )tandard procedure)
0. De,ective component) identi,ied and )eparated toot6er component)
$&. Computer )')tem) and networ2) are te)ted inaccordance wit6 t6e ;o" re<uirement)
$$. In,ormation are )6ared ,rom one computer to anot6era) primar' re<uirement in computer networ2ing
$#. eport) are prepared and completed according to t6ecompan' re<uirement)
NU!"<<C!T<O,$ COPUTER !RDW!RE #ER<C<,A ,C <<
U,<T O COPETE,C$ <,#T!"" COPUTER ##TE# !,D ,ETWOR-#
#PEC<<C <,#TRUCT<O,#$ ? o% t'e candidate@
A.Given the necessary tools, materials and equipment, perform
the following
1. PC testing and troubleshooting
2.Identify faulty connection of Computer and Peripherals.
3.Upgrade your computer by installing a network card.4.Upgrade the previous operating system to XP or Higher.
5.Troubleshoot network connection.
D(%ation$ 2 'o(%s
!ccom*lis' t'e ollowing +eo%e t'e allotted time.
8/18/2019 128971850 Module 2 Diagnose and Troubleshoot Computer Systems and Networks (1)
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COPETE,C E!"U!T<O, RE#U"T #U!R
TR!<,EE# ,!E
!C<"<T!TOR# ,!E
NU!"<<C!T<O, COPUTER !RDW!RE #ER<C<,A ,C <<D!TE O E!"U!T<O,
T<E O E!"U!T<O,
T'e Pe%o%mance o t'e T%ainee in t'e ollowing assessment
met'ods Q Please Tic0 a**%o*%iate +o=
#atisacto% ,ot
#atisacto%
!. Demonst%ation
1. Diagnose & t%o(+les'oot Com*(te% #stems and
netwo%0.
Did t'e t%ainees oe%all *e%o%mance meet t'e %eF(i%edeidences;standa%ds>
Recommendation
o% %e8eal(ation ))))))))))))))))))))))))))))))))
N(aliied to ta0e t'e ,e=t Com*etenc
Aene%al comments Q#t%engt's;<m*%oement ,eeded