1. MONITOR LED IS BLINKING
Check all the connections like Monitor Cable, Data cables,RAM, Display Card , CPU connections.

2. CONTINUOS THREE BEEPS
Problem in RAM Connection.

3. THREE BEEPS ( 1 Long 2 Short)
Problem in Display Card Connection

4. THREE LONG BEEPS PERIOD WISE
Problem in BIOS or RAM (Basic Input Output System)

5. CONTINUOS NON-STOP BEEPING
Key Board Problem ( I.e.; Some Key is pressed for Longer time)

6. FDD LED IS GLOWING CONTINUOSLY
Data cable to be connected properly (twisted cable).

7. NO DISPLAY ON THE SCREEN AT ALL
Hard Disk cable connected wrongly. Connect rightly seeing the Red mark (Faces power supply) and then Restart.

8. POWER LED IS OFF
a. Check main power cord
b. Check S.M.P.S.
c. Check Mother Board connection

9. SHOWING CMOS ERROR
Replace 3 Volt battery of Mother Board . Set Original Settings Manually.(Refer CMOS Setup chart)
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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 cable
d. Check Hard Disk parameters in CMOS or Auto detecting Setting Partitions by Fdisk Command, then format it to set track 0.

12. MOTHER BOARD HANGS DUE TO UNSTABILIZED POWER SUPPLY
a. Check S.M.P.S
b. RAM not functioning properly.
c. Software problem (due to using pirated software)
d. CPU fan not functioning properly.

13. DANCING SCREEN
a. Check Display card connection
b. Virus Problem
c. Video Memory Problem

14. SHAKING SCREEN
a. Earthing problem
b. Magnetic waves comes around.

15. CPU CABINET SHOCK
a. Check Earthing
b. Check main power cord.

16. NON-SYSTEM DISK ERROR
a. Floppy Drive having different disk (Non-Bootable Disk) OR CMOS Parameters for Hard Disk may not be set properly.
b. Hard Disk Partitions may not be created.
c. Hard Disk may not be formatted.

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