HP DC5100 Solving Hardware Installation Problems (Continued)

			Troubleshooting Without Diagnostics
Solving Hardware Installation Problems (Continued)
Problem	Cause	Solution
Computer will not start.	Wrong memory	1.	Review the documentation that
	modules were used in		came with the system to
	the upgrade or memory		determine if you are using the
	modules were installed		correct memory modules and to
	in the wrong location.		verify the proper installation.
		2.	Observe the beeps and LED
			lights on the front of the
			computer. See Appendix A,
			“POST Error Messages” to
			determine possible causes.
		3. If you still cannot resolve the
			issue, contact Customer
			Support.
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.
Power LED flashes Red six	Video card is not seated	For systems with a graphics card:
times, once every second,	properly or is bad, or	1.	Reseat the graphics card. Power
followed by a two second	system board is bad.
			on the system.
pause, and the computer
		2.	Replace the graphics card.
beeps six times.

3. Replace the system board.

For systems with integrated graphics, replace the system board.

Troubleshooting Guide www.hp.com 2–31