Here are some common computer errors and THEIR solution , maintenance, repair tips.
Top Common Computer Maintenance Repair the Errors & THEIR
1.MONITOR IS Blinking LED
Check all the connections like Monitor Cable, Data
cables, RAM, Display Card, CPU connections.
2.THREE beeps WISE LONG PERIOD
Problem in BIOS or RAM (Basic Input Output System)
3.THREE beeps (1 Long 2 Short)
Problem in Display Card Connection
4.MMX/DLL FILE MISSING
May the above files have be corrupted due to power
failure or virus. Make available above files from other
Computer. OR Reinstall Windows 98 Operating
Systems. (This procedure will not make any effect on
existing Data).
5.CONTINUOS THREE beeps
Problem in RAM Connection.
6.NO ON THE SCREEN DISPLAY AND ALL
Hard Disk cable connected wrongly. Connect rightly
seeing the Red mark (Faces power supply ) and then
Restart.
7.Power LED IS OFF
a. Check the main power cord
b. Check SMPS
c. Check Mother Board connection
8.SHOWING CMOS ERROR
Replace 3 Volt battery of Mother Board. September Original
Settings manually. (Refer chart CMOS Setup)
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9.DANCING SCREEN
a. Check Display card connection
b. Virus Problem
c. Video Memory Problem
10.SHOWING FDD ERROR OR FLOPPY DRIVE IS NOT
WORKING PROPERLY
Check Power cord of FDD, Data Cables, set CMOS &
Finally the Check drive.
11.SHOWING HDD ERROR OR HARD DISK FAILURE
a. Check Power Cord
b. Check connection of HDD
c. Check Data Cables
d. Check Hard Disk parameters in CMOS or Auto
detecting Setting Partitions by Fdisk Command, then format it to set track 0.
12. WINDOWS REGISTRY ERROR
This will happen due to sudden ON / OFF of the
systems. Final solution is to Reinstall Operating System.
13.MOTHER BOARD DUE TO hangs unstabilized
POWER SUPPLY
a. Check SMPS
b. RAM not functioning properly.
c. Software problem (due to using pirated software)
d. CPU fan not functioning properly.
COLOUR DOES NOT MATCH 14.DISPLAY
a. Configure Display Card properly with THEIR CD.
b. The Standard setting for Windows is set it to
800 × 600 for better performance.
15.NON-SYSTEM DISK ERROR
a. Floppy Drive having different disk (Non-Bootable
Disk) OR CMOS Parameters for Hard Disk has not be
set properly.
b. Hard Disk Partitions have not be created.
c. Hard Disk has not be formatted.
16.SHAKING SCREEN
a. Earthing problem
b. Magnetic waves comes around.
17.CPU CABINET SHOCK
a. Check Earthing
b. Check the main power cord.
NON-STOP beeping 18.CONTINUOS
Key Board Problem (ie: Some Key is pressed for
Longer time)
Glowing LED IS 19.FDD continuosly
Data cable to be connected properly (twisted cable).
20.SHOWING I / O ERROR
a. The type of Hard Disk in CMOS has not be set
properly.
b. Operating system used for formatting is not valid
21.SHOWING DIVIDE OVER-FLOW MESSAGE
a. May some Directories or Files crash with other files.
b. Use CHKDSK / F or SCANDISK Command to correct it.
22.HARD MAKING NOISE WHILE PROCESSING DISK
a. Unstabilized power supply.
b. Check for Loose Contact.
c. Do not use Y Connectors for Hard Disk.
d. It has Create Bad Sector OR Weak Hard Disk.
23.HARD hangs DISK WHILE PROCESSING
Check for Bad Sector by using CHKDSK or SCANDISK
Commands. If found format the Hard Disk and set
Partition before that area. (This is the only procedure
to use Hard Disk with Bad Sector) OR (To avoid Bad
Sectors use Standard Power Supply)
24.HARD DISK NOT Detected
a. Check Power Connector
b. Check Data Cables
c. Check Jumpers
25.MISSING OPERATING SYSTEM
The System files missing namely Ie; command.com} -
User File IO.SYS & MS_DOS.SYS} - Hidden Files. These
above three files required for Start up of the system
that can be transferred by using SYS C: Command OR
While the time of formatting by using Format c :/ u / s
COMMAND 26.MISSING interpretor
May the file is corrupted OR Infected Command.com
by Virus OR Some one has Erased it.
27.PARTITION NOT SHOWN
Operating System where the Hard Disk formatted is
not supported with present Mother Board. For Eg:
Hard Disk formatted with Pentium System will hide
THEIR partitions for 486 System.
28.UNKNOWN DEVICE FOUND
May the Driver utility is not provided with operating
systems. Insert Drivers CD and install the software for the
above Device
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