82 Chapter 4
Power-On Self-Test (POST) Error Mess age
The POST error message index lists the error message and their possible causes. The most likely cause is
listed first.
NOTE: Perform the FRU replacement or actions in the sequence shown in FRU/Action column, if the FRU
replacement does not solve the problem, put the original part back in the computer. Do not replace a
non-defective FRU.
This index can also help you determine the next possible FRU to be replaced when servicing a computer.
If the symptom is not listed, see “Undetermined Problems” on page 88.
The following lists the error messages that the BIOS displays on the screen and the error symptoms classified
by function.
NOTE: Most of the error messages occur during POST. Some of them display information about a hardware
device, e.g., the amount of memory installed. Others may indicate a problem with a device, such as the
way it has been configured.
NOTE: If the system fails after you make changes in the BIOS Setup Utility menus, reset the computer, enter
Setup and install Setup defaults or correct the error.

Index of Error Messages

Error Message List
Error Messages FRU/Action in Sequence
Failure Fixed Disk Reconnect hard disk drive connector.
“Load Default Settings” in BIOS Setup Utility.
Hard disk drive
Main Board
Stuck Key see “Keyboard or Auxiliary Input Device Check” on page 79 .
Keyboard error see “Keyboard or Auxiliary Input Device Check” on page 79.
Keyboard Controller Failed see “Keyboard or Auxiliary Input Device Check” on page 79.
Keyboard locked - Unlock key switch Unlock external keyboard
Monitor type does not match CMOS - R un
Setup
Run “Load Default Settings” in BIOS Setup Utility.
Shadow RAM Failed at offset: n nnn BIOS ROM
Main Board
System RAM Failed at offset : nnnn DIMM
Main Board
Extended RAM Fail ed at offset: nnnn DIM M
Main Board
System battery is dead - Replace and run
Setup
Replace RTC battery and Run BIOS Setup Utility to reconfigure
system time, then reboot system.
System CMOS chec ksum bad - Default
configuration used
RTC battery
Run BIOS Setup Utility to re configure system time, then re boot
system.
System timer error RTC battery
Run BIOS Setup Utility to re configure system time, then re boot
system.
Main Board
Real time clock error RTC battery
Run BIOS Setup Utility to re configure system time, then re boot
system.
Main Board