HP dx5150 Diagnostic Front Panel LEDs and Audible Codes (Continued)

POST Error Messages

Diagnostic Front Panel LEDs and Audible Codes (Continued)

		Possible
Activity	Beeps	Cause	Recommended Action

Red Power LED	None	Processor not
flashes three times,		installed (not
once every second,		an indicator
followed by a		of bad
two-second pause.		processor).
The Power LED will
continue flashing
until the problem is
resolved.

1.Check to see that the processor is present.

2.Reseat the processor.

Red Power LED	None	Power failure	1.	Open the hood and ensure the
flashes four times,		(power supply		4-wire power supply cable is seated
once every second,		overloaded).		into the connector on the system
followed by a				board.
two-second pause.			2.	Check if a device is causing the
The Power LED will
				problem by removing ALL attached
continue flashing
				devices (such as hard, diskette, or
until the problem is
				optical drives, and expansion
resolved.
				cards). Power on the system. If the
				system enters the POST, then power
				off and replace one device at a time
				and repeat this procedure until
				failure occurs. Replace the device
				that is causing the failure. Continue
				adding devices one at a time to
				ensure all devices are functioning
				properly.
			3. Replace the power supply.
			4.	Replace the system board.
Red Power LED	5	Pre-video	1.	Reseat DIMMs. Power on the
flashes five times,		memory error.		system.
once every second,			2.	Replace DIMMs one at a time to
followed by a
				isolate the faulty module.
two-second pause,
			3. Replace third-party memory with HP
and the computer
				memory.
beeps five times.
Beeps stop after			4.	Replace the system board.
five times but the
Power LED will
continue flashing

until the problem is resolved.

Service Reference Guide, dx5150 361685-001 C–5