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4 Error Messages and Beep Codes
What This Chapter Contains
4.1
BIOS Error Messages .................................................................................................. 77
4.2
Port 80h POST Codes ................................................................................................. 79
4.3
Bus Initialization Checkpoints ...................................................................................... 83
4.4
Speaker ....................................................................................................................... 84
4.5
BIOS Beep Codes........................................................................................................ 84
4.1 BIOS Error Messages
Table 41 lists the error messages and provides a brief description of each.
Table 41.
BIOS Error Messages
Error Message
GA20 Error
Pri Master HDD Error
Pri Slave HDD Error
Pri Master Drive - ATAPI Incompatible
Pri Slave Drive - ATAPI Incompatible
A: Drive Error
Cache Memory Bad
CMOS Battery Low
CMOS Display Type Wrong
CMOS Checksum Bad
CMOS Settings Wrong
CMOS Date/Time Not Set
DMA Error
FDC Failure
HDC Failure
Checking NVRAM.....
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 in not an ATAPI device. Run Setup to make
sure device is selected correctly.
No response from diskette drive.
An error occurred when testing L2 cache. Cache memory may be
bad.
The battery may be losing power. Replace the battery soon.
The display type is different than what has been stored in CMOS.
Check Setup to make sure type is correct.
The CMOS checksum is incorrect. CMOS memory may have
been corrupted. Run Setup to reset values.
CMOS values are not the same as the last boot. These values
have either been corrupted or the battery has failed.
The time and/or date values stored in CMOS are invalid. Run
Setup to set correct values.
Error during read/write test of DMA controller.
Error occurred trying to access diskette drive controller.
Error occurred trying to access hard disk controller.
NVRAM is being checked to see if it is valid.
continued
77
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