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BIOS PostCodes
ALR
AST
DTK
HP
IBM
NCR

Intel Motherboards:
T440BX
VC820

Compaq BIOS Beep Codes:

Beeps

Error Message

Description

1 short No error System is booting properly
1 long, 1 short BIOS ROM checksum error The contents of the BIOS ROM to not match the expected contents.  If possible, reload the BIOS from the PAQ
2 short General error Unknown
1 long, 2 short Video error Check the video adapter and ensure it's seated properly.  If possible, replace the video adapter
7 beeps (1 long, 1s, 1l, 1 short, pause, 1 long, 1 short, 1 short AGP video The AGP video card is faulty.   Reseat the card or replace it outright.  This beep pertains to Compaq Deskpro systems
1 long neverending beep  

Memory error. Bad RAM. Replace and test

1 short, 2 long Bad RAM Reseat RAM then retest; replace RAM if failure continues

 

Thanks to David Hollins for the beep code for AGP video.

Thanks to Barry Barcrest for the RAM beep codes.


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