1
BIOS
Error
Beep Codes
When the POST detects a problem, the system
sounds a series of long and short beeps. The se-
quence of the long and short beeps indicates which
error or errors have been found.
To decode the beeps, count the number of long and
short beeps and the sequence in which they occur.
The position of the long beeps in the sequence indi-
cates the error(s).
The following list shows what error is indicated by the
long beep position.
Long Beep Position Error Indicated
1 Signifies the start of beep decoding
2 Video card bad or no video card
3 Keyboard controller error
4 Keyboard error
5 Programmable Interrupt Controller (82591) error
6 Programmable Interrupt Controller (8259-l) error
7 DMA page register error
8 RAM refresh error
9 RAM data test error
10
parity error
11 DMA controller 1 error
12 CMOS
failure
13 DMA controller 2 error
14 CMOS
battery failure
15 CMOS checksum failed
16 BIOS ROM checksum failed
Copyright 1992
Version DO1
3-2
