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BIOS Recovery Beep Codes
In the case of a Bootblock update, where video is not available for text messages to be displayed,
speaker beeps are necessary to inform the user of any errors. Table 24 describes the type of error
beep codes that may occur during the Bootblock update.
Table 24.
BIOS Recovery Beep Codes
Beeps
1
2
Series of long
low-pitched single
beeps
2 long high-pitched
beeps
Bootblock Error Beep Codes
Table 25.
Bootblock Error Beep Codes
Beeps
Error message
1
Refresh timer failure
2
Parity error
3
Base memory failure
4
System timer
5
Processor failure
6
Keyboard controller Gate A20 failure
7
Processor exception interrupt error
8
Display memory read/write error
9
ROM checksum error
10
Shutdown register error
11
Invalid BIOS
76
Error message
POST Progress Code
Recovery started
Recovery boot error
Flashing series of
POST codes:
E9h
EEh
EBh
ECh
EFh
Recovery failed
EEh
Recovery complete
EFh
Description
Start recovery process.
Unable to boot to floppy, ATAPI,
or ATAPI CD-ROM. Recovery
process will retry.
Unable to process valid BIOS
recovery images. BIOS already
passed control to operating
system and flash utility.
BIOS recovery succeeded, ready
for power-down, reboot.
Description
The memory refresh circuitry on the motherboard is faulty.
Parity cannot be reset.
Base memory test failure.
System timer is not operational.
Processor failure detected.
The keyboard controller may be bad. The BIOS cannot
switch to protected mode.
The CPU generated an exception interrupt.
The system video adapter is either missing or its memory
is faulty. This is not a fatal error.
System BIOS ROM checksum error.
Shutdown CMOS register read/write error detected.
General BIOS ROM error.
Technical Reference
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