INTRODUCTION:
Personal computers due their closeness to user, there is need to know some basics problems and their possible solutions. This give hint of some basics problems. Always do not neglect any change you observed in your PC,early detection of problem, make solution easy. There is many task you can carry out using your PC,do not juck with it. Make sure Anti virus is updated, when time require.
Poor performance: this means delay in response to task given to the computer by the user. The following factors can develop poor performance of the computer:
Fragmented data.
Spyware programs.
Service software.
Corrupted register.
Virus attack.
Small RAM capacity.
Solution:
Regular clearing of registry which is needed.
Upgrading the RAM.
Using external flash as memory storage to reduce high data
in computer.
Installing antivirus and upgrading it when it is stated.
It is advisable to have at least 30%of computer performance
speed.
Blue Screen of Death
(BSOD):
It is the critical errors that occur in window operating
system. Following program can cause it:
Spyware, malware or virus
Error in drive.
Error in register or software.
Solution:
It can be identify by an 8-digital have decimal 1 number
such as STOP 0x000000A. STOP 0x0000007F.
You can use event viewer to digital these errors.
System lock up problem:
Low capacity of RAM.
Attack of virus.
Solution:
Upgrade the RAM (Random Access Memory) to high memory
capacity.
Installed light capacity application to avoid filling of
your computer memory
INPUT AND OUTPUT DEVICE NOT FUNCTION:
All the devices connected to computer system most have
driver, it can be automatically install and configure by operating system
manufacturer.
While other needs to be installed by the user, such as
printer, scanner, and photocopier, they all have their drivers which allow them
to communicate with operating system and carried out it required function.
Troubleshooting
procedures of computer system:
Back up users data.
System approach.
Make no assumptions.
Create priorities.
Documentations.
Backup
user’s data:
This is very important, because it allow restoring user’s
data after carrying out troubleshooting work. This makes users comfortable with
his system.
System approach:
It is very important to follow system bit by bit in an
orderly many time random selecting of component during trouble shooting. Also
make sure you use electrostatic discharge (ESD), because electro static can
cause erasing of data.
Make no
assumption:
Making assumption was always, not applicable as per as
trouble shooting concern, something dust can cause system not function and all
the Components were ok. At this
situation firstly blow out the dust completely and power the computer system to
observe its operation it may be ok.
There is time, a hardware
technician tried to repair computer system and is not even powering on, they
called me to check, despite am not expert hardware repair, I am still learning.
I opened the CPU case, I remember the RAM can cause similar problem, I remove
the RAM, I cleaned the RAM and I re-insert it, the computer system was just
started booting after pressing its power button.
Establish Priorities:
It is usual, several fault can be
occurred at the same time. What you suppose to do, select more priority. For
instant, if there are two computer systems one did not power o at all in this
situation second computer system most given priority than first one.
Documentation: this is a compiling all the
necessary measure you took to solve any fault in computer system, cause of the
fault ,date and time and precautions taken
by the user of computer to avoid feature occurrences of the fault. This is the
really helpful and serves as reference in feature trouble shooting work.
Basic
trouble shooting tools:
Troubleshooting was categorized into two:
Hardware tools.
Software tools.
Hardware tools are the physical tools
they include
Screw driver.
Long-noise pliers.
Multi-Meter (Digital or Analog)
Flashlight.
Soldering iron.
Wire strippers.
Compressed air can or vacuum
Software
tools and utilities:
The are tools to solve operational
problem of computer system ,such as booting or incorrect configuration.
Bootable disk.
Power on self –test .
Hard drive self –test.
Bootable
disk: This helps the
computer system to boot with MS-DOS. It consists of vital utilities such as
format & edits command.
Power-on self-test (post): This has responsibility of detecting
and testing major hardware component installed on the computer all the basic
components are in good working condition if post completed successfully.
Hard-drive
self-test: This can
be using Microsoft diagnostic (MSD) program to test the good condition of hard
disk.
Software
diagnostic tools:
they are use to check or monitor and test the hardware component. Microsoft
diagnostic (MSD). Qaplus, Checkits and Amidag
