Service and Maintain

C–6 415606-001 Service Reference Guide, dx2200 MT
POST Error Messages
POST Diagnostic Front Panel LEDs and Audible Codes
Activity Beeps Possible Cause Recommended Action
Green Power LED
On.
None Computer on. None
Green Power LED
flashes every two
seconds.
None Computer in
Suspend to RAM
mode (some
models only) or
normal Suspend
mode.
None required. Press any key or move the
mouse to wake the computer.
Power LED flashes
every 4 seconds.
This continues until
the issue has been
resolved.
None Processor thermal
protection
activated:
A fan may be
blocked or not
turning.
OR
The heatsink-fan
assembly is not
properly attached
to the processor.
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.
If fan is plugged in but is not spinning,
then replace processor fan.
Reseat processor heatsink and verify that
the fan assembly is properly attached.
Contact an authorized reseller or service
provider.
Power LED flashes
five times, once
every second,
followed by a two
second pause.
LEDs continue until
problem is solved.
None Pre-video memory
error.
Reseat DIMMs. Power on the system.
Replace DIMMs one at a time to isolate
the faulty module.
Replace third-party memory with HP
memory.
Replace the system board.