Lenovo X120E manual Error messages, No-beep symptoms, LCD-related symptoms

Error messages

Table 3. Error messages

Symptom or error (beeps, if any)	FRU or action, in sequence
Bad CRC2. Enter BIOS Setup Utility, and load Setup	Press F1 to enter BIOS Setup Utility (ThinkPad Setup
defaults.	for ThinkPad X120e). Press F9, and Enter to load
(two short beeps)	the default setting. Then save the current setting by
	pressing F10, and restart the computer.
Fan error.	1.	Fan.
(four short beeps, one long beep)	2.	Thermal grease.
	3.	System board.
DRAM is unplugged.	Memory card is not installed. Install memory card.
(one short beep, pause, three short beeps, pause, three
short beeps, pause, one short beep.)
DRAM is not well plugged.	Reinstall the memory card.
(one short beep, pause, three short beeps, pause, three
short beeps, pause, one short beep.)
Operating system not found.	1.	Check that the operating system has no failure
		and is installed correctly.
	2.	Enter BIOS Setup Utility (ThinkPad Setup for
		ThinkPad X120e) and see whether the hard disk drive
		is properly identified. If you still see the same error
		message, check the boot sequence.
	3.	Reinstall the hard disk drive.
	4.	Reinstall the operating system.
System Configuration Data Read Error	Press F1 to enter BIOS Setup Utility (ThinkPad Setup
(two short beeps)	for ThinkPad X120e). Press F9, and Enter to load
	the default setting. Then save the current setting by
	pressing F10, and restart the computer.

No-beep symptoms

Table 4. No-beep symptoms

Symptom or error	FRU or action, in sequence
No beep, power-on indicator on, LCD blank, and no	1.	Make sure that every connector is connected
POST.		tightly and correctly.
	2.	DIMM.
	3.	System board.
No beep, power-on indicator on, and LCD blank during	1.	Reseat DIMM.
POST.	2.	System board.
The power-on password prompt appears.	A power-on password or a supervisor password is set.
	Type the password and press Enter.
The hard-disk password prompt appears.	A hard-disk password is set. Type the password and
	press Enter.

LCD-related symptoms

Important: The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). The presence of a small number of dots that are missing, discolored, or always lighted is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns.

36ThinkPad X100e and X120e Hardware Maintenance Manual