HP dc5750 manual Advanced Onboard Devices

Table A-1Numeric Codes and Text Messages (continued)

Control panel message	Description	Recommended action
301-Keyboard Error	Keyboard failure.	1.	Reconnect keyboard with computer
			turned off.
		2.	Check connector for bent or missing
			pins.
		3.	Ensure that none of the keys are
			depressed.
		4.	Replace keyboard.
303-Keyboard Controller Error	I/O board keyboard controller.	1.	Reconnect keyboard with computer
			turned off.
		2.	Replace the system board.
304-Keyboard or System Unit Error	Keyboard failure.	1.	Reconnect the keyboard with computer
			turned off.
		2.	Ensure that none of the keys are
			depressed.
		3.	Replace the keyboard.
		4.	Replace the system board.
404-Parallel Port Address Conflict Detected	Both external and internal ports are assigned	1.	Remove any parallel port expansion
	to parallel port X.		cards.
		2.	Clear CMOS. (See Appendix B,
			Password Security and Resetting
			CMOS.)
		3.	Reconfigure card resources and/or run
			Computer Setup.
410-Audio Interrupt Conflict	IRQ address conflicts with another device.	Enter Computer Setup and reset the IRQ in
		Advanced > Onboard Devices.
411-Network Interface Card Interrupt Conflict	IRQ address conflicts with another device.	Enter Computer Setup and reset the IRQ in
		Advanced > Onboard Devices.
501-Display Adapter Failure	Graphics display controller.	1.	Reseat the graphics card (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-Flash Screen Image Corrupted	Flash Screen image has errors.	Reflash the system ROM with the latest BIOS
		image.
511-CPU, CPUA, or CPUB Fan not Detected	CPU fan is not connected or may have	1.	Reseat CPU fan.
	malfunctioned.	2.	Reseat fan cable.
		3.	Replace CPU fan.

52 Appendix A POST Error Messages ENWW