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A Error Messages
BIOS Beep Codes
Whenever a recoverable error occurs during power-on self-test (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 12. Beep Codes
Number of Beeps Description
1 Refresh failure
2 Parity can not be reset
3 First 64 K memory failure
4 Timer not operational
5 Processor failure (Reserved; not used)
6 8042 GateA20 cannot be toggled (memory failure or not present)
7 Exception interrupt error
8 Display memory R/W error
9 ROM checksum error (Reserved; not used)
10 CMOS Shutdown register test error
11 Invalid BIOS (such as, POST module not found)
BIOS Error Messages
Table 13. BIOS Error Messages
Error Message Explanation
GA20 Error An error occurred with Gate-A20 when switching to protected
mode during the memory test.
Pri Master HDD Error
Pri Slave HDD Error
Sec Master HDD Error
Sec Slave HDD Error
Could not read sector from corresponding drive.
Pri Master Drive - ATAPI Incompatible
Pri Slave Drive - ATAPI Incompatible
Sec Master Drive - ATAPI Incompatible
Sec Slave Drive - ATAPI Incompatible
Corresponding drive is not an ATAPI device. Run Setup to make
sure device is selected correctly.
A: Drive Error
B: Drive Error
No response from diskette drive.
continued