Transcript Some Digital Content

Troubleshooting - Common
Problems
Engr. Md. Golam Sarwar
Bangladesh Computer Council
System Unit Troubleshooting:
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Error-1: Computer does not turn on and appears
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Cause:
completely dead.
a) Power cable connection is loose or disconnected.
b) Power supply unit of System may be defected.
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Symptom:
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Power indicator lead of system unit remains off after switching
on.
Remedy:
a) Check the power Cable Connection from Main switch to System
Unit power socket through UPS and Extension board.
b) Measure the DC Voltage of the output of Power Supply that are
connected to HDD, FDD, CD-ROM Drive etc. using Multi-meter.
If 0 Voltage found then the System Unit power supply may be
damaged. Repair/ Replace the power supply unit.
System Unit Troubleshooting:
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Error-2: Computer is not booting.
Cause:
a) System file may be corrupted.
b) Boot disk data cable or power cable may have defects.
c) Boot disk (Hard disk or floppy disk) may be damaged.
d) Boot drive is not enabled in BIOS.
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Symptom:
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“Strike F1 to retry boot and F2 to setup utility.” or “Booting failure” or
“Primary Hard Drive 0 not found” message will be appeared on the
screen.
Remedy:
a) If possible transfer the system files to the drive where the Operating
System exists.
b) Check the Power and Data Cable connection of the bootable disk drive
by opening the casing of system unit. Tighten them if found loose.
c) Try to boot from floppy disk and change to the drive C (using command
C: and then Enter). If you can change drive then the Hard Disk Drive is
OK and try to reinstall OS (choosing Format and recover hard drive)
and all application software. Otherwise replace the Hard Disk with a
new one.
d) Select appropriate from BIOS boot sequence.
System Unit Troubleshooting:
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Error - 3: Computer does not boot and makes
continuous long beep.
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Cause:
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RAM is loose or RAM slot is empty.
Remedy:
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Check the RAM slot and place RAM in that slot
properly.
System Unit Troubleshooting:
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Error - 4: The computer is 'Hang up', 'Lock up' or
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Cause:
'Freezes'.
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Symptom:
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It is usually a software problem that occurs from corrupted files.
Sometimes it is due to faulty cooling system of processor.
Computer is not responding with the instruction from user. i.e.,
everything is freeze.
Remedy:
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a) Press Ctrl + Alt + Delete at a time. Select the program for
which the program is not responding. Click End Task and wait
for few seconds. Another new window will appear. Click End
Task again. If the problem remains thenb) Press power switch of the System Unit and hold down till the
computer is shut down. Then restart the computer.
c) If the problem remains shut down and open the casing of
system unit. Check for the processor cooling fan and clean all
the parts of the of the system unit. Restart the computer.
Display Trouble shooting:
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Error - 1: No display in monitor.
Cause:
a) Monitor switch is off or Monitor Power cable connection is loose or
disconnected.
b) Monitor signal cable is loose or disconnected.
c) Monitor brightness is minimized.
d) AGP Card loose in AGP socket (For internal AGP card in AGP slot).
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Symptom:
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Power indicator lead of Monitor may remains off or may blinks after
switching on. One long and two short beep made by built in speaker.
(For d.)
Remedy:
a) Check the power Cable Connection from Main switch to Monitor power
socket through UPS and Extension board.
b) Check Monitor signal Cable is connected to the System Unit perfectly.
c) Adjust the brightness of Monitor.
d) Shutdown the Computer. Unplug the monitor signal cable. Open the
casing of System Unit and unscrew & unplug the AGP card. Clean the
slot and the card with a soft and clean brush carefully. Reattach the
card in the slot and screw it. Close the casing and plug in signal cable.
Mouse and Keyboard Trouble shooting:
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Error - 1: Mouse is not responding when the computer is
powered on.
Cause:
a) The mouse is loosely connected or not connected to the Mouse
port.
Remedy:
a)
Shutdown the computer. Set the Mouse connection to mouse
port properly. Restart the computer.
Error - 2: Keyboard is not responding when the computer is
powered on.
Cause:
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The Keyboard is loosely connected or not connected to the
Keyboard port.
Remedy:
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Shutdown the computer. Set the Keyboard connection to
Keyboard port properly. Restart the computer.
Audio Trouble shooting
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Error - 1: No sound from speaker.
Cause:
a) Speaker power and signal cable is loosely connected or disconnected.
b) Master volume is muted.
c) Audio driver is not installed.
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Symptom:
a) Speaker power lead is dark.
c) No volume control icon will exist on Task Bar.
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Remedy:
a) Check the power Cable Connection from Main switch to speaker through
UPS, Extension board and adapter.
b) Click Start > programs > accessories > Entertainment > Volume control
> clear all check boxes, which are muted.
c) Check Audio driver is installed properly. [Click Start > Settings > Control
Panel > System (or Right click on My computer > Properties >)
Hardware > Device Manager > double click on ‘Sound, Video and Game
controller’. If any error indicator appears before any item that contains
the word Audio then it means that, Audio Driver is not installed.] If not
installed then install audio driver.
Printer Trouble shooting
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Error –1: The message “There was an error writing to
LPT1: for the printer [IBM Proprinter XL24e]: There
was a problem ........................................” with a
message box.
This message indicates that the printer is unable to
print specific object. The following steps to be done for
solving the problem:
1. Remove all the scotch tape and extra papers from the Printer (If
any). It is applicable only when you set a new printer first time.
2. Check whether the Printer Data Cable is connected properly to
printer port of CPU & printer and Power Cable connection from
extension board to printer properly.
3. On the Power switch of Stabilizer and Printer (If switched off);
4. Ensure the paper is inserted properly in the paper feeder of the
printer.
5. Press “Retry” or try to reprint the document, if everything is ok.
Printer Trouble shooting
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Error – 2: Printer prints garbage.
Causes:
a) Proper printer driver is not installed.
b) The proper printer driver is not set as default.
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Remedy:
a) Install proper printer driver.
b) Click start > Settings > Printer > Right click on your
physical printers driver > if the tick (√) mark is not
exist before ‘Set as default’ then click on it.
Printer Trouble shooting
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Error – 3: Printer output page is Blank.
Cause:
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Printer data cable may have defect.
Remedy:
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Change printer data cable (One or more pin
of the printer data cable may disconnected or
broken)
Programs open slowly or
not at all
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Not enough RAM
Hard disk needs de-fragmentation
Virtual Memory Low
Scan Disk / Disk Repair
Most Trouble Shooting is
Common Sense