HP dx5150 POST Diagnostic Front Panel LEDs and Audible Codes, Beeps, Cause, Possible, Activity, Recommended Action, 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.

✎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.

Diagnostic Front Panel LEDs and Audible Codes

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

Red Power LED	None	Processor
flashes two times,		thermal
once every second,		protection
followed by a		activated:
two-second pause.		A fan may be
The Power LED will		blocked or not
continue flashing		turning.
until the problem is		OR
resolved. (Pertains
		The
to CPU fan only)
		heatsink/fan
		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. Leave a

4-inch (10.2-cm) clearance at the back of the system unit and above the monitor to permit the required airflow.

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. Ensure the fan is fully/properly seated or installed.

3.If fan is plugged in and seated properly, but is not spinning, then replace processor fan.

4.Reseat processor heatsink and verify that the fan assembly is properly attached.

C–4 361685-001 Service Reference Guide, dx5150