Error Messages; No-Beep Symptoms; Lcd-Related Symptoms - Lenovo THINKPAD X120E Hardware Maintenance Manual

Error messages

Table 3. Error messages
Symptom or error (beeps, if any)
Bad CRC2. Enter BIOS Setup Utility, and load Setup
defaults.
(two short beeps)
Fan error.
(four short beeps, one long beep)
DRAM is unplugged.
(one short beep, pause, three short beeps, pause, three
short beeps, pause, one short beep.)
DRAM is not well plugged.
(one short beep, pause, three short beeps, pause, three
short beeps, pause, one short beep.)
Operating system not found.
System Configuration Data Read Error
(two short beeps)

No-beep symptoms

Table 4. No-beep symptoms
Symptom or error
No beep, power-on indicator on, LCD blank, and no
POST.
No beep, power-on indicator on, and LCD blank during
POST.
The power-on password prompt appears.
The hard-disk password prompt appears.

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.
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ThinkPad X100e and X120e Hardware Maintenance Manual
FRU or action, in sequence
Press F1 to enter BIOS Setup Utility (ThinkPad Setup
for ThinkPad X120e). Press F9, and Enter to load
the default setting. Then save the current setting by
pressing F10, and restart the computer.
1. Fan.
2. Thermal grease.
3. System board.
Memory card is not installed. Install memory card.
Reinstall the memory card.
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.
Press F1 to enter BIOS Setup Utility (ThinkPad Setup
for ThinkPad X120e). Press F9, and Enter to load
the default setting. Then save the current setting by
pressing F10, and restart the computer.
FRU or action, in sequence
1. Make sure that every connector is connected
tightly and correctly.
2. DIMM.
3. System board.
1. Reseat DIMM.
2. System board.
A power-on password or a supervisor password is set.
Type the password and press Enter.
A hard-disk password is set. Type the password and
press Enter.