Troubleshooting Guide

A–4 www.hp.com Troubleshooting Guide
POST Error Messages
Warning: CPU fan
has failed.
CPU Fan weak (RPM <
1000) or not turning.
Ensure that the CPU fan power cable is
connected. If the problem persists, contact
an authorized service center for
assistance.
Warning: System
Fan has failed.
System Fan weak (RPM <
1000) or not turning.
Ensure that the System fan power cable is
connected. If the problem persists, contact
an authorized service center for
assistance.
Memory is running
at Single Channel
Mode
When two same size
memories are put in slot
1 and 3, this message
will be displayed.
For optimal performance, shut down the
system and move the second DIMM from
the XMM3 to the XMM2 socket.
Numeric Codes and Text Messages (Continued)
Code/Message Probable Cause Recommended Action