Lenovo 4223, 4228, 4229 manual Miscellaneous error messages, Post Error Message Description/Action

POST Error Message	Description/Action
CMOS battery failed	The CMOS battery is no longer functional.
	Replace the battery.
CMOS checksum error - defaults loaded	Checksum of CMOS is incorrect.
	The computer loads the default configuration settings.
	This error might indicate that CMOS has become corrupt
	due to a weak CMOS battery.
CPU at nnnn	nnnn is the running speed of the microprocessor.
Press Esc to skip memory test	Pressing Esc skips the full memory test
HARD DISK INSTALL FAILURE	Cannot find or initialize the hard disk drive controller or
	the drive.
	Make sure the hard disk drive is correctly installed.
	If no hard disk drives are installed, make sure the hard
	disk drive selection in Setup is set to NONE.
Keyboard error or no keyboard present	Cannot initialize the keyboard.
	Make sure the keyboard is properly connected to the
	computer and that no keys are held pressed during POST.
	To purposely configure the computer without a keyboard,
	set the error halt condition in Setup to HALT ON ALL, BUT
	KEYBOARD. The BIOS then ignores the missing keyboard
	during POST.
Memory Test:	This message displays during a full memory test, counting
	down the memory areas being tested.
Memory test fail	If POST detects an error during memory testing, additional
	information appears. This information gives specifics
	about the type and location of the memory error.
Press TAB to show POST screen	Pressing the TAB key permits the user to toggle between
	the default POST display screen and a custom POST
	display screen.
Error: Non-System disk or disk error Replace and press	The BIOS was unable to find a suitable boot device.
any key when ready	Make sure the boot drive is properly connected to the
	computer.
	Make sure you have bootable media.

Miscellaneous error messages

Message/Symptom	FRU/Action
Changing display colors	Display/Monitor
Computer will not turn off. See “Hard disk drive boot	1.	Power switch
error” on page 49.	2.	System board
	3.	Riser card, if installed.

Chapter 8. Symptom-to-FRU Index 51