HP 43361 POST Diagnostic Front Panel LEDs and Audible Codes, Beeps, Activity, Possible Cause, Recommended Action, POST Diagnostic Front Panel LEDs and Audible Codes

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.

ÅWARNING: 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.

Look for the LED between the DIMM sockets. If the LED is illuminated, the system still has power. Power off the computer and remove the power cord before proceeding.

✎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.

No all diagnostic lights and audible codes are available on all models.

POST Diagnostic Front Panel LEDs and Audible Codes

Activity	Beeps	Possible Cause	Recommended Action
Green Power LED	None	Computer on.	None
On.
Green Power LED	None	Computer in	None required. Press any key or move the
flashes every two		Suspend to RAM	mouse to wake the computer.
seconds.		mode (some
		models only) or
		normal Suspend
		mode.

Red Power LED	2	Processor thermal
flashes two times,		protection
once every		activated:
second, followed		A fan may be
by a two second		blocked or not
pause. Beeps stop		turning.
after fifth iteration		OR
but LEDs continue
		The heatsink/fan
until problem is
solved.		assembly is not
		properly attached

to the processor.

1.Ensure that the computer air vents are not blocked and the processor cooling fan is running.

2.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.

3.If fan is plugged in, but is not spinning, then replace heatsink-fan assembly.

Service Reference Guide, dx7300 433611-001 C–9