HP EliteDesk 705 G1 manual 213

Control panel message	Description	Recommended action
515-Power Supply fan not detected	Power supply fan is not connected or may have	1.	Reseat power supply fan.
	malfunctioned.	2.	Reseat fan cable.
		3.	Replace power supply fan.
601-Diskette Controller Error	Diskette controller circuitry or floppy drive	1.	Check and/or replace cables.
	circuitry incorrect.	2.	Clear CMOS. (See Appendix B, Password
			security and resetting CMOS
			on page 208.)
		3.	Replace diskette drive.
		4.	Replace the system board.
605-Diskette Drive Type Error	Mismatch in drive type.	1.	Disconnect any other diskette controller
			devices (tape drives).
		2.	Clear CMOS. (See Appendix B, Password
			security and resetting CMOS
			on page 208.)
660-Display cache is detected unreliable	Integrated graphics controller display cache is	Replace system board if minimal graphics
	not working properly and will be disabled.	degrading is an issue.
912-Computer Cover Has Been Removed Since	Computer cover was removed since last system	No action required.
Last System Startup	startup.
917-Front Audio Not Connected	Front audio harness has been detached or	Reconnect or replace front audio harness.
	unseated from motherboard.
918-Front USB Not Connected	Front USB harness has been detached or	Reconnect or replace front USB harness.
	unseated from motherboard.
921-Device in PCI Express slot failed to	There is an incompatibility/problem with this	Try rebooting the system. If the error reoccurs,
initialize	device and the system or PCI Express Link could	the device may not work with this system
	not be retrained to an x1.
1151-Serial Port A Address Conflict Detected	Both external and internal serial ports are	1.	Remove any serial port expansion cards.
	assigned to COM1.	2.	Clear CMOS. (See Appendix B, Password
			security and resetting CMOS
			on page 208.)
		3.	Reconfigure card resources and/or run
			Computer Setup or Windows utilities.
1152-Serial Port B Address Conflict Detected	Both external and internal serial ports are	1.	Remove any serial port expansion cards.
	assigned to COM2.	2.	Clear CMOS. (See Appendix B, Password
			security and resetting CMOS
			on page 208.)
		3.	Reconfigure card resources and/or run
			Computer Setup or Windows utilities.
1155-Serial Port Address Conflict Detected	Both external and internal serial ports are	1.	Remove any serial port expansion cards.
	assigned to same IRQ.	2.	Clear CMOS. (See Appendix B, Password
			security and resetting CMOS
			on page 208.)
		3.	Reconfigure card resources and/or run
			Computer Setup or Windows utilities.

POST numeric codes and text messages 203