IBM A21e manual Errors without messages, Configuration

Solving computer problems

Message	Cause and action
UNSUPPPORTED	The size of the installed memory module is over capacity for the system.
MEMORY	ThinkPad A21e supports a memory size of equal or less than 256MB. Shut
CONFIGURATION:	down the system and remove the installed DIMM.
Maximum memory size
256MB. Shut down
computer and remove
extra memory.
CardBus Configuration	Press F1 to go to the IBM BIOS Setup Utility. Press F9 and then Enter to
Error—Device Disabled	load the default setting.
	Press F10 and then Enter to restart the system.

Errors without messages

Problem: When I turn on the machine, nothing appears on the screen and the machine does not beep while starting up.

Note: If you are not sure whether you heard any beeps, turn off the computer; then turn it on again, and listen again. If you are using an external monitor, refer to External monitor problems.

Solution: If a power-on password is set, press any key to display the power-on password prompt, and then type the correct password and press Enter. If the power-on password prompt does not appear, the brightness control lever might be set to minimum brightness. Adjust the brightness level by pressing the Fn + Home key. If the screen still remains blank, make sure that:

vThe battery pack is installed correctly.

vThe ac adapter is connected to the computer and the power cord is plugged into a working electrical outlet.

vThe computer power is on. (Turn on the power switch again for confirmation.)

If these items are properly set, and the screen remains blank, have the computer serviced.

Problem: When I turn on the machine, nothing appears on the screen, but I hear two or more beeps or a continuous beep while starting up.

Solution: If you are using Ethernet:

vMake sure that the Ethernet cable is connected firmly.

vContact your network administrator.

If the screen is still blank, and the beeps do not stop, have the computer serviced.

14ThinkPad® A21e Service and Troubleshooting Guide