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MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 28 OF 45
Whenever a recoverable (non-terminal) error occurs during POST, the BIOS displays an error
message describing the problem (the most usual are described below). After some messages, you
may be prompted to Press <F1> to resume, <F2> to enter Setup or just Press
<F2> to enter Setup.
In general, you should respond to these errors as follows:
Shut down the computer, wait 20 to 30 seconds, and then turn it on again to see if the
problem is still reported.
Check that all external cables are securely connected.
Try running the BIOS Setup utility to reconfigure the system. If the computer will not
BOOT after you make changes in BIOS Setup, try returning to the original settings.
Open up the system unit and check that all internal signal and power cables are securely
connected.
If the problem persists, contact your supplier or authorised maintainer.
System Configuration Data updated
This message indicates that the system configuration has changed (such as an expansion
card has been added) and that the configuration data has therefore been updated.
System Configuration Data Write Error
This message indicates that the system configuration has changed (such as an expansion
card has been added) but the configuration data could not be updated.
Invalid System Configuration Data – run configuration utility
The data describing the system configuration is incorrect and should be updated. This can
be done by checking the ‘Reset Configuration Data’ in BIOS Setup followed by ‘Save and
Exit’.
Diskette drive A error
Drive A: is present but fails the POST diskette tests. Check that the drive is defined
correctly in BIOS Setup. If necessary, open the system unit and check that the drive’s signal
(ribbon) cable is connected.
System/Extended/Shadow RAM failed at offset: xxxx Failing bits: yyyy
System, extended or shadow memory is not working, or not configured properly, at offset
xxxx. The hexadecimal number yyyy is a map of the bits at the address that failed the
memory test. Each “1” in the map represents a failed bit.
Fixed disk X failure or Fixed disk controller failure
A fixed (hard) disk drive is not working or not configured properly. Check that the drive is
defined correctly in BIOS Setup. If necessary, open the system unit and check that the
drive’s signal (ribbon) cable is connected.
Incorrect drive A type - run SETUP
The diskette drive is not correctly specified in BIOS Setup.
Invalid NVRAM media type
Problem with NVRAM (non-volatile random-access memory).
Keyboard error [nn] or Keyboard controller error
There is a problem with the keyboard or (less likely) the standard I/O controller on the
motherboard. If POST discovers a stuck key it displays its scan code.