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Troubleshooting Charts
Message Action
xxxxx
KB OK appears
and the computer stops.
Have the computer serviced.
No Error Codes or Messages
Problem Action
The screen is blank and
you don't hear any beeps.
Note: If you are not sure
whether you heard any
beeps, turn the computer
off; then turn it on again,
and listen again.
If you are using an
external monitor, go to
“External Monitor
Problems” on page 139.
Make sure that:
The battery pack is installed correctly.
The AC Adapter is connected to the computer and the power cord is
plugged into a working electrical outlet.
The computer power is on. (Turn on the power switch again for
confirmation.)
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 (see page 88).
If the power-on password does not appear, the brightness control might be set
to minimum brightness. Adjust the brightness.
If the screen still remains blank, have the computer serviced.
The screen is blank and
you hear a continuous
beep, or two or more
beeps.
Have the computer serviced.
Only the cursor appears. Reinstall your operating system and turn on the computer.
If you still have a problem, have the computer serviced.
122 IBM ThinkPad 600 User's Reference
Title: C79EGMST CreationDate: 02/10/98 09:24:42