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Code
Beeps
Test which failed
16
1-2-2-3
BIOS ROM checksum
20
1-3-1-1
DRAM refresh.
22
1-3-1-3
8742 keyboard controller
2C xxxx
1-3-4-1
RAM failure on address line xxxx.
2E xxxx
1-3-4-3
RAM failure on data bits xxxx of low byte of
memory bus.
30 xxxx
1-4-1-1
RAM failure on data bits xxxx of high byte of
memory bus.
46
2-1-2-3
Check ROM copyright notice
58
2-2-3-1
Test for unexpected interrupts
98
1-2
Video configuration failure, or option ROM
checksum failure. (One long, two short beeps.)
Terminal POST errors and beep codes
There are several POST routines that shut down the
computer if they fail. If possible, the BIOS displays a
two-digit hexadecimal code and/or sounds a sequence
of beeps to identify the point at which POST failed.
The most usual errors are listed in the table on the
left.
The BIOS also issues one long tone followed by two
short tones if the video system is faulty or if an
external ROM module (including video ROM) fails.
Turn off the computer for 30 seconds and then try
again. If the fault persists, make a note of the error
code (if any) and call your supplier or authorised
maintainer.
B I O S S e t u p & P O S T
OWNER'S HANDBOOK
7 / 7
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