HP Small Form Factor PC dc5850 manual 57

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

Control panel message	Description	Recommended action
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.
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 on page 57.)
		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.

512-Chassis, Rear Chassis, or Front Chassis Fan not Detected

Chassis, rear chassis, or front chassis fan is 1.	Reseat chassis, rear chassis, or front
not connected or may have malfunctioned.	chassis fan.

		2.	Reseat fan cable.
		3.	Replace chassis, rear chassis, or front
			chassis fan.
601-Diskette Controller Error	Diskette controller circuitry or floppy drive	1.	Run Computer Setup.
	circuitry incorrect.	2.	Check and/or replace cables.
		3.	Clear CMOS. (See Appendix B,
			Password Security and Resetting
			CMOS on page 57.)
		4.	Replace diskette drive.
		5.	Replace the system board.
605-Diskette Drive Type Error	Mismatch in drive type.	1.	Run Computer Setup.
		2.	Disconnect any other diskette controller
			devices (tape drives).
		3.	Clear CMOS. (See Appendix B,
			Password Security and Resetting
			CMOS on page 57.)

ENWW POST Numeric Codes and Text Messages 51