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Basic Troubleshootingin the classroom
By: Ryan Ukno & David Citulsky
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In this session, we will show you basic
troubleshooting techniques in the
following areas:
A typical PC desktop/notebook system setup
Peripheral equipment connected to a
desktop/notebook system Smartboard and Mimio equipment
Networking wired and wireless
Software (MS) troubleshooting
Fixing software errors/viruses etc. using free
easy-to-use tools
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PC/NOTEBOOK SYSTEMSETUP
Sec 1
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Desktop PC system setupA Desktop PC (Personal Computer) consists of a
Computer Case box that contains the following
components:
Motherboard CPU
Memory
Video card
Sound card
Power supply DVD/CD & Floppy drive
Case fans (optional)
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Desktop port
connections
On the back
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Notebook system setupA notebook (or laptop) PC is a mobile/portable
version of a desktop PC. It contains the same
internal components as the desktop but in a
smaller compact form-factor.
The main components are:
Display
Keyboard
Touchpad
Power adapter
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Typical ports on a notebook system
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Lets look at a few common
problems you might encounter
with your notebook or desktop.
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It wont power ON!
Desktop
Check that your power
cord is firmly plugged
in and the switch on
the power supply
switch is ON (1).
Check that lights are
ON and you hear the
fans working inside.
Problem may be a bad
connection i.e. video
If there are no lights or
fans check that the
power outlet works!
Notebook
Check that there is
lights (indicate power
or battery)
Check that your
battery is charged
otherwise plug in
your adapter directly.
Disconnect your
battery and plug theAC adapter directly. If
it powers on, your
battery may need
replacement.
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No display!
Desktop
Check video cable
connections to
monitor
Check that your
monitor
contrast/brightness is
not set too low
Make sure monitor
has a green light.I
fits orange, recheck
connections. If
connections are good,
video card may be bad.
Notebook
Check that nothing is
plugged into the VGA
port .
Try Fn+Fx (depends
on model) to enable
primary display and
disable ext vga output
If there is lights but
nothing comes on,hold power button for
5-10 secs to
completely power off.
Wait 30 sec and
power it back on.
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No operating system! Make sure there is NO floppy in the
floppy drive when you are starting
up the computer.
Make sure there is NO DVD/CD in theDVD/CD drive when starting up.
Make sure there is NO USB drive
plugged in when starting up.
It may try to boot off these drives
Make sure floppy/dvd/cd/usb drives
are empty and restart the computer.
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Keyboard/mouse not responding Check keyboard connection. Press
Numlock or Capslock key light
should be on keyboard
Check mouse (optical only)connection. Optical light on bottom
should be lit.
Unplug/re-plug connectors to the
ports and restart the computer.
For wireless, check the batteries and
replace if necessary. Synchronize the
mouse/keyboard with the CC button.
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PERIPHERALS
Sec 2
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Peripherals in the classroom
Scanners
Printers (laserjet, deskjet)
Webcameras
Microphones
Speakers
Monitors/LCD projectors
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Scanners/printers/webcams
These peripherals will typically use
the same cable interface USB 2.0
All should plug into the USB port of
the computer
USB Type A Male
To computer
USB Type B Male
To peripheral
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Speakers/Microphones setup Both are color coded and should be
easy to identify.
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Monitor and LCD projector setup
Can be connected together with one
VGA cable or with two VGA cables
The most common in classroom
desktops is using two VGA cables For notebook computers, only one
VGA cable is necessary to connect to
the LCD projector.
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Lets look at a few problems youmight run into with peripherals..
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Scanner/printer/webcam is not
detected!
First check your connections,
windows should make a sound
when a USB device is plugged in. If it doesnt make that sound you
may have a bad USB cable.
If it does make the sound and
cannot be recognized, reinstall thesoftware. Obtain the CD software
drivers CD or find software online.
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Printer is on but will not print!
Check the status lights of the printer
If it is blinking, printer has error.
If no lights on printer, check the printqueue of the printer and delete old
jobs
If the printer is network shared,
make sure the computer connectedto the printer is turned ON.
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Microphone troubleshooting
If your mic doesnt receive sound
make sure it is set as the default
recording device in sound options.
Adjust the sound level input options Can use third-party apps such as
Skype to configure the microphone
so it is ready to be used.
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Speakers doesnt have sound!
Check there is power to the speakers
Plug in a set of headphones to test
the sound card
Check sound levels not set to mute! Try speakers on a different computer
If it works on another, reinstall the
device driver software for your
soundcard.
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Monitor-projector shows no input
Check connections, back of
computer/monitor and projector
On projector select correct source
i.e. VGA or computer1 or 2 Some systems will have a video driver
utility where you specify to output to
a second monitor (LCD)
For notebook, use the special comboFn+Fx (different by manufacturer) to
output to projector.
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INTERACTIVE BOARDSSMARTBOARD/MIMIO
Sec 3
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NETWORKTROUBLESHOOTINGWIRED AND WIRELESS CONNECTIONS
Sec 4
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Lets look at a wired connection:
You will find wired connections in
most classrooms - usually 2 ports per
classroom
A wired connection will have: Cat 5 network cable(s)
A network switch
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Troubleshooting:
Internet or network is down!
First, always check cable connections
in classroom! Check your systray
network icon. These indicate an
unplugged cable
Be sure to check the switch (if available) and
network port on PC. A link light should be lit
on both ends.
Also, make sure the switch has power.
All else fails, try a different CAT5 cable!
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Wired network problems contd
If connections are ok but still no network access Check first that entire network is not down
Limited connectivity errors can sometimes be fixed by
restarting your computer and/or network switch.
Network switch in classroom
Make sure that every cable plugged into the switch
has a link light.
Be aware of
loopback
connections in
your classroom
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Wireless connections
wireless connections are made up of
scattered wireless access points
sometimes found in classrooms.
They connect to wireless clientsusing secured or unsecured
connections.
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Troubleshooting:
Wireless network connectionsNot connected?Check that you are connected by viewing the
wireless status icon:
This shows disconnected
Right-click to view available wireless networks
If you do not see a list of wireless networks, check
that your wireless adapter is enabled!
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Problems connecting to the wireless??
Make sure the passphrase is correct.
If passphrase is wrong or changed, go into
control panel, wireless connection
properties, wireless networks tab and
remove a network.
Find the network again from the list of
available networks and reconnect using the
correct passphrase.
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Wireless troubleshooting contd
In Windows XP you might see the
following error:
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Network troubleshooting contd
This can fixed by making sure use
windows to configure my wireless..
is checked.
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SOFTWARE PROBLEMS
Sec 5
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Software troubleshooting
Most newer computers are designed to
multitask (run more than one program
at a time).
However, there may be times where aprogram (or two) will stop responding
or freeze up!
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Software troubleshooting contd
In some cases, you may not get a chance to end a
program or shut it down at all.
Heres what you can do:
Right-click the taskbar and select task manager or
start task manager
Find the program
under task and click
End Task
Sometimes you mayhave to find the
program under
processes and click
end process
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Software errors
Diagnosing errors can be a frustratingtask.
Most of the time, you can find solutions to error
messages by searching online either a support
website or knowledgebase.
Its always good to keep track of when the programworked and when it didnt.
- Did the error occur after an update?
- Did it occur after installing a different program?
You can always undo the update or installation as
a quick fix
Documenting the exact error
message would be one of the
first steps you should take.
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Software troubles contd
For uninstalling troublesome software, you
would go through the control panel and
add/remove programs or Programs and
features.
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Software toubles contd
In some cases, finding an update for
a program can cure certain
bugs/errors for that program.
Updates can usually be found fromtheir help menu and check for newer
version or updates.
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Software troubles other solutions
Find an alternate program as a workaround
Eg. Adobe reader crashes constantly use
alternate pdf program like Foxit Reader.
Using windows system restore
Use as a last resort.
Be sure to restore to the most recent and last
working restore point. This method notrecommended for first time users.
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Software file deletions?
If youve accidentally deleted a file, always check
first if its in your recycle bin.
If its a file on the network, always ask your network
administrator or technician as they should have past
day backups that they can recover.
Well also show a freeware file recovery software for
you to try if files were deleted on the hard drive.
*Need to recover a word document file?
Check your word options where auto file recovery is.
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Software malware
When surfing online, you may get pop ups or
programs showing up where it shows an antivirusor protection program that claims to clean your PC.
If you see these types of programs, find it under
task manager and end task.
To clean spyware, you will need an antispyware
tool which will be covered next and is also free!
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FREE APPS/TOOLS TO USE
Sec 6
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Tools spyware cleaning
Continuing from the last section, the
commonly most used tool for spyware
removal is Malwarebytes which is free
to download.
Once you download the program,install it (use defaults) and make sure it
checks for updates.
Run a full scan on all your hard drives.
Scans can be anywhere from 15-60mins depending on size of hard drive.
After it is done, show list of items,
check all and click remove selected.
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Malwarebytes
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Software tools - CCleaner
Want to clean up disk space/delete
unneeded files?
A good free program for that is CCleaner
Download the program and install usingdefault paths/settings.
Run the program and click analyze.
This will show you the list of unneeded
files and the size its taking on your harddrive. Click run cleaner to clean them up!
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CCleaner
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File recovery
A good freeware recovery program you
can try is recuva. It can recover files
from any hard drive, flash usb or
memory card!
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Maintenance and security
Making sure your PC has the latest
security updates is very important.
Updates will fix any security flaws or
exploits that hackers can gain access to.
Verify you are receiving auto upates by
going to control panel, system and
windows update.
Also, check that your antivirus software
is up to date and set to auto-update.
Make sure it is always enabled and
scanning in real time.
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Url Links
http://www.smarttech.com
http://www.mimio.dymo.com/en-US.aspx
http://www.malwarebytes.org/mbam.php
http://www.piriform.com/ccleaner/download
http://www.piriform.com/recuva/download
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And this concludes our session
Any questions?
Hopefully these tips will make you
better at diagnosing common
computer issues.