12 POST Error Messages
This appendix lists the error messages and the various audible sequences that you may encounter
during Power-On Self-Test (POST) or computer restart, the probable source of the problem, and
steps you can take to resolve the error condition.
POST Text Messages
The section includes some text messages that may be encountered during POST.
NOTE: The computer will beep once after a POST text message is displayed on the screen.
Recommended actions in the following table are listed in the order in which they should be
performed.
WARNING! When the computer is plugged into an AC power source, voltage is always applied to
the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be
sure to disconnect the power cord from the wall outlet and allow the internal system components to
cool before touching.
Table 12-1 Numeric Codes and Text Messages
Control panel message Description Recommended action
Default BIOS settings have been loaded
due to BIOS update or checksum issue.
Press <F1> (or <F10>) to enter Setup.
Otherwise, allow the PC to continue.
BIOS has been updated or returned to
default settings.
Press F1 (or F10) to enter Computer Setup
and configure the system or ignore the
message and accept the default settings.
ERROR: CPU Fan Has Failed. PC will
automatically power down in a few seconds.
Service PC immediately to prevent damage
to CPU.
CPU fan is not connected or may have
malfunctioned.
1. Reseat the CPU fan.
2. Reseat the fan cable.
3. Replace the CPU fan.
ERROR: System Fan Has Failed. Service
PC to prevent damage to the system. Press
F2 to continue.
System fan is not connected or may have
malfunctioned.
1. Reseat the system fan.
2. Reseat the fan cable.
3. Replace the system fan.
ERROR: Unsupported CPU installed. PC
will automatically power down in a few
seconds.
Recently installed CPU is not supported by
the system.
Install a CPU supported by your system.
POST Text Messages
185
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