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A Error Messages
BIOS Beep Codes
Whenever a recoverable error occurs during the POST, the BIOS displays an error message
describing the problem. The BIOS also issues a beep code (one long tone followed by two short
tones) during POST if the video configuration fails (a faulty video card or no card installed) or if
an external ROM module does not properly checksum to zero.
Table 26.
Beep Codes
Number of Beeps
1
2
3
4
5
6
7
8
9
10
11
BIOS Error Messages
Table 27.
BIOS Error Messages
Error Message
GA20 Error
Pri Master HDD Error
Pri Slave HDD Error
Sec Master HDD Error
Sec Slave HDD Error
Pri Master Drive - ATAPI Incompatible
Pri Slave Drive - ATAPI Incompatible
Sec Master Drive - ATAPI Incompatible
Sec Slave Drive - ATAPI Incompatible
A: Drive Error
Description
Refresh failure
Parity can not be reset
First 64 K memory failure
Timer not operational
Processor failure (Reserved; not used)
8042 GateA20 cannot be toggled (memory failure or not present)
Exception interrupt error
Display memory R/W error
ROM checksum error (Reserved; not used)
CMOS Shutdown register test error
Invalid BIOS (such as, POST module not found)
Explanation
An error occurred with Gate A20 when switching to protected
mode during the memory test.
Could not read sector from corresponding drive.
Corresponding drive is not an ATAPI device. Run Setup to make
sure device is selected correctly.
No response from diskette drive.
continued
61
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