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BIOS User’s Manual
A - 2
Beeps Error message Description
1 Refresh Failure The memory refresh circuitry on the
motherboard is faulty.
2 Parity Error A parity error was detected in the base
memory (the first 64 KB block) of the
system.
3 Base 64 KB Memory Failure A memory failure occurred within the
first 64 KB of memory.
4 Timer Not Operational A memory failure was detected in the
first 64 KB of memory, or Timer 1 is
not functioning.
5 Processor Error The CPU on the system board
generated an error.
6 8042 - Gate A20 Failure The keyboard controller (8042) contains
the Gate A20 switch which allows the
CPU to operate in virtual mode. This
error means that the BIOS cannot
switch the CPU into protected mode.
7 Processor Exception The CPU on the motherboard generated
Interrupt Error an exception interrupt.
8 Display Memory Read/Write The system video adapter is either
Error missing or its memory is faulty.
Please Note: This is not a fatal error.
9 ROM Checksum Error The ROM checksum value does not
match the value encoded in the BIOS.
10 CMOS Shutdown Register The shutdown register for CMOS
Read/Write Error memory has failed.
Refer to the table on page A-3 for solutions to the error beep codes.