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POST Error Beep Codes
The following table lists POST error beep codes. Prior to system Video initialization, BIOS uses
these beep codes to inform users on error conditions. The beep code will be followed by a user
visible code on POST Progress LEDs.
Table 24. Beep Codes
Beeps Error
Message
Description
1
Fatal error
System halted because of an unspecified fatal error that was detected.
2
Processor error
System halted because a fatal error related to a processor was detected.
3
Memory error
System halted because a fatal error related to the memory was detected.
4 Motherboard
error
System halted because a fatal error related to the system motherboard
hardware was detected.
1-5-1-1
FRB3 failure (processor failure)
1-5-2-1
CPU: empty slot
1-5-2-2
CPU: no processors
1-5-2-3
CPU: configuration error (example VID mismatch)
1-5-2-4 CPU:
Configuration error (example BSEL mismatch)
1-5-4-2
Power fault: DC power unexpectedly lost (power control failure)
1-5-4-4
Power control fault (Usually a VRM is not installed.)
BIOS Recovery Beep Codes
Table 25. BIOS Recovery Beep Codes
Beeps
Error Message
POST Progress Code
Description
1 beep
Recovery Started
E9h
Start of recovery process
2 beeps
Recovery Boot Error
Flashing series of
POST codes: EFh,
FAh, FBh, F4h, FCh,
FDh, FFh
Unable to boot to floppy, ATAPI, or
ATAPI CD-ROM. Recovery process
will retry.
A series of long
low-pitched single
beeps
Recovery Failed
FDh
Unable to process valid BIOS
recovery images. BIOS already
passed control to operating system
and flash utility.
4 long high-
pitched beeps
Recovery Complete
FFh
BIOS recovery succeeded, ready for
power-down, reboot.
POST Error Pause Option
In case of POST error(s) which are listed with the View equal to "Yes", the BIOS will enter the
error manager and wait for the user to press an appropriate key before booting the OS or entering
the BIOS setup.
The user can override this option by setting "POST Error Pause" to "disabled" in the BIOS setup
Advanced menu page. If the "POST Error Pause" option is set to "disabled", the system will boot
the operating system without user-intervention. The default value is set to "enabled".
