
POST Messages
A-1
POST Messages
The following table lists the Power On Self Test (POST) messages,
possible causes, and solutions.
A
Message Possible Cause
DISKETTE DRIVE A
FAILURE
Drive A failed or is
missing.
DISKETTE DRIVE B
FAILURE
Drive B failed or is
missing.
EXTENDED RAM
FAILED AT
OFFSET: nnnn
Extended memory not
working or configured
properly.
FAILING BITS: nnnn
Memory failure in
System, Extended, or
Shadow memory.
FIXED DISK X
FAILURE (where X
=0 or 1)
The hard disk is not
configured or working
properly.
FIXED DISK
CONTROLLER
FAILURE
The controller card has
failed.
INCORRECT DRIVE
A TYPE
Floppy drive A: not set
correctly in Setup.
INCORRECT DRIVE
B TYPE
Floppy drive A: not set
correctly in Setup.
INVALID NVRAM
MEDIA TYPE
NVRAM chip is bad.
Requires repair of system
KEYBOARD
ERROR, or
KEYBOARD
CONTROLLER
ERROR
The keyboard or
keyboard controller
failed.
KEYBOARD
ERROR nn
A key is jammed or was
held down during boot.
KEYBOARD
LOCKED
Keyswitch on the front of
the case is locked.
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