HP DC5100 Code/Message, Probable Cause, Recommended Action, Advanced > Onboard Devices, Advanced > Onboard Devices

POST Error Messages

Numeric Codes and Text Messages (Continued)

Code/Message	Probable Cause	Recommended Action
304-Keyboard or	Keyboard failure.	1. Reconnect the keyboard with
System Unit Error			computer turned off.
		2.	Ensure that none of the keys are
			depressed.
		3.	Replace the keyboard.
		4.	Replace the system board.
404-Parallel Port	Both external and	1.	Remove any parallel port expansion
Address Conflict	internal ports are		cards.
Detected	assigned to	2.	Clear CMOS. (See Appendix B,
	parallel port X.
			“Password Security and Resetting
			CMOS.”)
		3.	Reconfigure card resources and/or
			run Computer Setup.
410-Audio Interrupt	IRQ address conflicts	Enter Computer Setup and reset the IRQ in
Conflict	with another device.	Advanced > Onboard Devices.
411-Network	IRQ address conflicts	Enter Computer Setup and reset the IRQ in
Interface Card	with another device.	Advanced > Onboard Devices.
Interrupt Conflict
501-Display	Graphics display	1.	Reseat the graphics card
Adapter Failure	controller.		(if applicable).
		2.	Clear CMOS. (See Appendix B,
			“Password Security and Resetting
			CMOS.”)
		3.	Verify monitor is attached and turned
			on.
		4.	Replace the graphics card (if
			possible).
510-Splash Screen	Splash Screen image has	Install latest version of ROMPaq to restore
Image Corrupted	errors.	image.
511-CPU, CPUA, or	CPU fan is not connected	1. Reseat CPU fan.
CPUB Fan not	or may have	2.	Reseat fan cable.
Detected	malfunctioned.
		3.	Replace CPU fan.

A–6 www.hp.com Troubleshooting Guide