IBM MT 2632 manual Beep symptoms, No beep symptoms, ThinkPad A21e

		Symptom-to-FRU index
Beep symptoms
Symptom or error	FRU or action, in sequence
One beep and a blank,	1.	Reseat the LCD
unreadable, or flashing LCD.		connector.
	2.	LCD assembly.
	3.	External CRT.
	4.	System board.
One long and two short beeps,	1.	System board.
and a blank or unreadable	2.	LCD assembly.
LCD.	3.	DIMM.
Two short beeps with error	POST error. See “Numeric
codes.	error codes” on page 41.
Two short beeps with blank	1.	System board.
screen.	2.	DIMM.
Three short beeps, pause,	1.	DIMM.
three more short beeps, and	2.	System board
one short beep.
Only cursor appears.	Reinstall operating system.
No beep symptoms
Symptom or error	FRU or action, in sequence
No beep, power-on indicator	1.	Make sure that every
on, LCD blank, and no POST.		connector is connected
		tightly and correctly.
	2.	DIMM.
	3.	System board.
No beep, power-on indicator	1.	Reseat DIMM.
on, and LCD blank during	2.	System board.
POST.
No beep during POST, but	Speaker.
system runs correctly.
The power-on password	A power-on password or a
prompt.	supervisor password is set.
	Type the password and press
	Enter.
The hard-disk password	A hard-disk password is set.
prompt.	Type the password and press
	Enter.
The DOS full screen looks	Start the ThinkPad
smaller.	Configuration program and set
	the Screen expansion
	function.

ThinkPad A21e 45