Service and Maintain

Service Reference Guide, dx2200 MT 415606-001 C–5
POST Error Messages
POST Diagnostic Front Panel LEDs and Audible Codes
This section covers the front panel LED codes as well as the audible codes that may occur before
or during POST that do not necessarily have an error code or text message associated with them.
✎
If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the
computer and refer to the following table to determine the front panel LED codes.
✎
Recommended actions in the following table are listed in the order in which they should be
performed.
Non-System Disk or
Disk Error
BIOS unable to find a
suitable boot device.
Verify that the device booting from is
bootable. Replace as needed.
Warning: CPU Fan Has
Failed. For Thermal
Protection, System will
be shut down. A 3
second long beep will
be heard before the
system will shut down.
CPU fan weak or not
active.
Ensure that the computer air vents are
not blocked and the chassis cooling fan
is running.
Open hood, press power button, and
see if the chassis fan spins. If the fan is
not spinning, make sure the fan's cable
is plugged onto the system board
header. Ensure the fan is fully/properly
installed.
If fan is plugged in but is not spinning
then, replace chassis fan.
Replace the chassis fan.
Warning: Processor Fan
Has Failed. For Thermal
Protection, System will
be shut down. A 3
second long beep will
be heard before the
system will shut down.
Processor fan weak or not
active.
Ensure that the computer air vents are
not blocked and the processor cooling
fan is running.
Open hood, press power button, and
see if the processor fan spins. If the
processor fan is not spinning, make sure
the fan's cable is plugged onto the
system board header. Ensure the fan is
fully/properly seated or installed.
If fan is plugged in and seated properly,
but is not spinning, then replace
processor fan/heatsink assembly.
Contact an authorized reseller or service
provider.
POST Error Messages
Screen Message Probable Cause Recommended Action