A51, M51e Series ThinkCentre Deskop PC Quick Reference Guide

Code Description Action
8603 Pointing device error
No mouse was detected.
v Install a mouse.
Or
v Set the mouse option correctly
using the Setup Utility.
If
you cannot correct the problem,
have the computer serviced.
POST beep codes
Another way for POST to notify you of errors is through a series of audible
beeps. A beep pattern represents a numeric value and provides further
information about the location of a potential problem.
The following are the most common POST beep codes that you might hear
when starting your computer.
Beep pattern Description Action
1 long and 2 short
beeps
No on-screen message. Beeps
occur before video
initialization.
Remove and reinstall the dual
inline memory modules
(DIMMs).
If the problem persists, have the
computer serviced.
1 long beep followed
by a series of short
beeps
External ROM failure (such as
VGA)
If the problem persists, have the
computer serviced.
2 short beeps A POST error occurred. If you have changed the
hardware configuration, go into
the Setup Utility and exit to save
setting. Otherwise refer to error
code section to resolve error.
1 short - 3 short - 3
short - 1 short
No memory or no
configuration memory
Reinstall the memory.
If problem persists, replace the
memory.
Here are some general guidelines for working with POST beep codes:
v Record any beep patterns that you hear. If you call for service, you will be
asked for the beep patterns.
v If the beep pattern is not in this book, more in-depth troubleshooting is
required.
Chapter 5. Troubleshooting and diagnostics 29