HP DC5100 Solving Processor Problems, Solving Processor Problems, Solving Memory Problems (Continued)

Troubleshooting Without Diagnostics

Solving Memory Problems (Continued)

Problem	Cause	Solution
Power LED flashes Red five	Memory is installed	1.	Reseat DIMMs. Power on the
times, once every second,	incorrectly or is bad.		system.
followed by a two second		2.	Replace DIMMs one at a time to
pause, and the computer
			isolate the faulty module.
beeps five times.
		3.	Replace third-party memory
			with HP memory.
		4.	Replace the system board.

Solving Processor Problems

If you encounter processor problems, common causes and solutions are listed in the following table.

Solving Processor Problems

Problem	Cause	Solution
Poor performance is	Processor is hot.	1.	Make sure the airflow to the
experienced.			computer is not blocked.
		2.	Make sure the fans are
			connected and working
			properly (some fans only
			operate when needed).
		3.	Make sure the processor
			heatsink is installed properly.
Power LED flashes Red	Processor is not seated	1.	Check to see that the processor
three times, once every	properly or not		is present.
second, followed by a two	installed.	2.	Reseat the processor.
second pause.

2–38 www.hp.com Troubleshooting Guide