Post Diagnostic Front Panel Leds And Audible Codes - HP dx2100 - Microtower PC Service & Reference Manual

POST Error Messages
Screen Message
Non-System Disk or
Disk Error
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.
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.

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.
Service Reference Guide, dx2100 MT
Probable Cause
BIOS unable to find a
suitable boot device.
CPU fan weak or not
active.
Processor fan weak or not
active.
404569-001
POST Error Messages
Recommended Action
Verify that the device booting from is
bootable. Replace as needed.
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.
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.
C–5