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. The following table describes the type of error beep codes that may occur during the Bootblock update.
Table 16. BIOS Recovery Beep Codes
Beeps | Error message |
1 | Recovery started |
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2 | Recovery boot error |
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POST Progress Code
Flashing series of POST codes: E9h
EEh
EBh
ECh
EFh
Description
Start recovery process.
Unable to boot to floppy, ATAPI, or ATAPI
Series of long | Recovery failed | EEh |
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| |
beeps |
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2 long | Recovery complete | EFh |
beeps |
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Unable to process valid BIOS recovery images. BIOS already passed control to operating system and flash utility.
BIOS recovery succeeded, ready for
Bootblock Error Beep Codes
Table 17. Bootblock Error Beep Codes
Beeps Error message
1Refresh timer failure
2Parity error
3Base memory failure
4System timer
5Processor failure
6Keyboard controller Gate A20 failure
7Processor exception interrupt error
8Display memory read/write error
9ROM checksum error
10Shutdown register error
11Invalid BIOS
Description
The memory refresh circuitry on the motherboard is faulty.
Parity can not be reset.
Base memory test failure. **See
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.
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