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Troubleshooting
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Several POST routines issue a POST terminal error and shut down the system
when they fail. Before shutting down the system, the terminal error handler
sounds a beep code (one long tone and a series of short tones) that identifies
the test point error. If POST completes normally, the BIOS issues one short beep
before passing control to the operating system.
Beeps Description Troubleshooting steps
1 Refresh failure. The memory
refresh circuitry on the system
board is faulty.
Reseat the memory or replace with known
good modules.
2 Parity error. Parity error in the first
64 KB of memory.
Same as for 1 beep.
3 Base 64 KB memory failure.
Memory failure in first 64 KB.
Same as for 1 beep.
4 Memory failure in first 64 KB of
memory, or Timer 1 on the system
board not functioning.
Remove all expansion cards.
■
If the beep codes occur even when all
expansion cards have been removed, the
system board is at fault.
■
If the beep codes do not occur when the
expansion cards have been removed, one
of the cards is causing the problem. Install
the cards one at a time until the problem
happens again. When the beep codes
return, the most recent card you installed
is at fault.
5 The processor on the system board
generated an error.
Same as for 4 beeps.
6 The keyboard controller (8042) may
be defective. The BIOS cannot
switch to Protected mode.
Same as for 4 beeps.
7 The processor generated an
exception interrupt.
Same as for 4 beeps.
8 The server video adapter is either
missing or its memory is faulty. This
is not a fatal error.
Check or replace the video adapter.
9 The ROM checksum value does not
match the value encoded in the
BIOS.
Same as for 4 beeps.