Lenovo 7558 Miscellaneous error conditions, Error code Post Error Message Description/Action

Error code	POST Error Message	Description/Action
0135	Fan failure	The system might be overheating.
		Press F10 to exit.
		Note: If the problem is caused by the
		microprocessor fan, press F10 will
		not solve the problem.
0211	Keyboard not found	When there is no keyboard detected,
		the error message will be displayed.
0164	Memory size decreased	Press F10 to exit.
1762	Configuration change has occurred	This error message is displayed when
		a hard disk drive or optical drive
		change has been made.
		Press F10 to exit.
0662	Configuration change has occurred	This error message is displayed when
		a floppy drive change has been made.
		Press F10 to exit.
1820	More than one external fingerprint	If more than one external fingerprint
	reader are attached. Power off and	reader are connected to a computer,
	remove all but the reader that you set	this error message will be displayed
	up within your main operating system.	to inform you to remove all of the
		fingerprint keyboards except the
		one compatible with the fingerprint
		application on your computer.
1962	No operating system found. Press	This error occurs only after the POST
	any key to repeat boot sequence.	is completed.
		Press any key to repeat boot
		sequence.

Miscellaneous error conditions

Message/Symptom	FRU/Action
Changing display colors	Display/Monitor
Computer will not power-off. See “Hard disk drive boot	1.	Power Switch
error” on page 57.	2.	System Board
	3.	Riser card, if installed.
Computer will not RPL from server	1.	Ensure that network is in startup sequence as first
		device or first device after diskette.
	2.	Ensure that network adapter is enabled for RPL.
	3.	Network adapter (Advise network administrator of
		new MAC address)

76ThinkCentre Edge Hardware Maintenance Manual