HP DX2250 manual Interpreting Diagnostic Lights

Activity	Possible Cause	Recommended Action
Green Power LED flashes six	Pre-video graphics error.	For systems with a graphics card:
times, once every second, followed		1.	Reseat the graphics card.
by a two second pause.
		2.	Replace the graphics card.
		3.	Replace the system board.
		For systems with integrated graphics, replace the system
		board.
Green Power LED flashes eight	Invalid ROM based on bad	1.	Reflash the system ROM with the latest BIOS
times, once every second, followed	checksum.		image.
by a two second pause.		2.	Replace the system board.
System does not power on and	System unable to power on.	Press and hold the power button for less than 4 seconds.
LEDs are not flashing.		If the hard drive LED turns green, the power button is
		working correctly. Try the following:
		1.	Check that the voltage selector (some models),
			located on the rear of the power supply, is set to the
			appropriate voltage. Proper voltage setting
			depends on your region.
		2.	Replace the system board.
		OR
		Press and hold the power button for less than 4 seconds.
		If the hard drive LED does not turn on green then:
		1.	Check that the unit is plugged into a working AC
			outlet.
		2.	Open hood and check that the power button
			harness is properly connected to the system board.
		3.	Check that both power supply cables are properly
			connected to the system board.
		4.	Check to see if the 5V_aux light on the system
			board is turned on. If it is turned on, then replace
			the power button harness. If the problem persists,
			replace the system board.
		5.	If the 5V_aux light on the system board is not turned
			on, remove the expansion cards one at a time until

the 5V_aux light on the system board turns on. It the problem persists, replace the power supply.

ENWW Interpreting Diagnostic Lights 15