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BIOS Beep Codes
Errors may occur during POST (Power On Self Test), performed every time the system is powered on. Fatal errors are communicated through a series of audible
beeps. All errors except Beep Code 8 are fatal errors. Fatal errors do not allow the system to continue the boot process. Consult the component manufacturer for
possible repairs if a fatal error occurs.
Non-fatal errors are those which, in most cases, allow the system to continue the boot process. They are normally displayed on the screen. The non-fatal BIOS
error messages are shown on page .
AMIBIOS Beep Codes
The following table contains all AMIBIOS beep codes. Except for Beep Code 8, they are always fatal.
Beeps
Error message
1
Refresh Failure
The memory refresh circuitry on the motherboard is
faulty.
2
Parity Error
Parity error in base memory.
3
Base 64 KB Memory
Memory failure in first 64 KB.
Failure
4
Timer Not Operational
Memory failure in base memory, or Timer 1 on the
motherboard is not functioning.
5
Processor error
The CPU on the motherboard generated an error.
6
8042 - Gate A20 Failure
Gate A20 on the keyboard controller (8042) allows
the CPU to operate in protected mode. Cannot
switch to protected mode.
7
Processor Exception
The CPU generated an exception interrupt.
Interrupt Error
8
Display Memory
The system video adapter is either missing or its
Read/Write Error
memory is faulty. This is not a fatal error.
9
ROM Checksum Error
The ROM checksum value does not match the
value in the BIOS.
10
CMOS Shutdown
The shutdown register for CMOS RAM has failed.
Register Read/Write Error
Description
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