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Message Cause and action
UNSUPPPORTED
MEMORY
CONFIGURATION:
Maximum memory size
256MB. Shut down
computer and remove
extra memory.
The size of the installed memory module is over capacity for the system.
ThinkPad A21e supports a memory size of equal or less than 256MB. Shut
down the system and remove the installed DIMM.
CardBus Configuration
Error—Device Disabled
Press F1 to go to the IBM BIOS Setup Utility. Press F9 and then Enter to
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:
v The battery pack is installed correctly.
v The ac adapter is connected to the computer and the power cord is plugged
into a working electrical outlet.
v The 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:
v Make sure that the Ethernet cable is connected firmly.
v Contact your network administrator.
If the screen is still blank, and the beeps do not stop, have the computer
serviced.
Solving computer problems
14
ThinkPad
®
A21e Service and Troubleshooting Guide