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POST Error Messages List
If you cannot run the diagnostics program tests but did receive a POST error message, use “POST Error
Messages List” to diagnose system problems. If you did not receive any error message, look for a
description of your error symptoms in “Error Symptoms List” on page 66.
NOTE: When you have deemed it necessary to replace an FRU, and have done so, you must run a total
system check to ensure that no other activity has been affected by the change. This system
check can be done through the diagnostics program.
NOTE: Check all power supply voltages, switch, and jumper settings before you replace the main board.
Also check the power supply voltages if you have a “system no-power” condition.
If you are unable to correct the problem by using the “BIOS Messages List” table and “Error Symptoms
List” table, go to “Undetermined Problems”.
To diagnose a problem, first find the BIOS error messages in the left column. If directed to a check
procedure, replace the FRU indicated in the check procedure. If no check procedure is indicated, the first
Action/FRU listed in right column is the most likely cause.
BIOS Messages Action/FRU
BIOS ROM
checksum error -
System halted
The checksum of the BIOS code in the BIOS chip is incorrect, indicating the BIOS
code may have become corrupt. Contact your system dealer to replace the BIOS.
CMOS Battery
Failed
The CMOS battery is no longer functional. Contact your system dealer for a
replacement the BIOS.
CMOS Checksum
Error- defaults
loaded
Checksum of CMOS is incorrect, so the system loads the default equipment
configuration. A checksum error may indicate that CMOS has become corrupt. A
weak battery may have caused this error. Check the battery and replace if
necessary.
CPU at nnnn Displays the running speed of CPU.
Display switch is set
incorrectly
The display switch on the motherboard can be set to either monochrome or color.
This message indicates the switch is set to a different setting than indicated
in Setup. Determine which setting is correct, and
then either turn off the system and change the jumper, or enter Setup and
change the Video selection.
Press ESC to skip
memory test
The user may press Esc to skip the full memory test.
HARD DISK
initializing - Please
wa
i
t a moment
Some hard drives require extra time to initialize.
HARD DISK
INSTALL FAILURE
Cannot find or initialize the hard drive controller or the drive. Make sure the controller
is installed correctly. If no hard drives are installed, be sure the Hard Drive Selection
in Setup is set to NONE.
Hard disk(s)
diagnosis fail
The system may run specific disk diagnostic
routines. This message appears if one or more hard disks return an error when the
diagnostics run.