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Chapter 4: Troubleshooting
Power-On Self-Test (POST) error message
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
the FRU/Action column. If the FRU replacement does not solve the
problem, put the original part back in the notebook. Do not replace a
non-defective FRU.
This index can also help you determine the next possible FRU to be replaced when servicing a
notebook.
If the symptom is not listed, see “Undetermined problems” on page 153.
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, such as 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 notebook, enter Setup, and install Setup defaults or
correct the error.