Original IBM Beep Codes
 
 

IBM BIOS Beep Codes

Beeps

Error Message

Description

1 short Normal POST System is booting properly
2 short Initialization error Error code is displayed
1 long, 1 short System board error  
1 long, 2 short Video adapter error  
1 long, 3 short EGA/VGA adapter error  
3 long 3270 keyboard adapter error  
Continuous Power supply error Replace the power supply
999s Power supply error Replace the power supply
No beep Power supply Replace the power supply


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