What If Your Computer Does Not Work?
General Problems
Problem
Cause or Action
The computer
performance is getting
worse in an environment
where the temperature is
higher than the product
specifications. (See
“Specifications” on
page 251.)
Processor speed may decrease if the computer is used in a high-temperature
environment.
Problems such as a
broken keylock or an
indicator not working.
Have the computer serviced.
The computer does not
turn off with the power
switch.
If the suspend indicator is turned on, connect the AC Adapter or install a fully
charged battery pack to the computer; then resume it.
If there is still a problem, press the Power Shutdown switch on the rear of the
computer with the tip of a pen to turn off the computer.
The application locks up
or the computer does not
accept any input.
Press the Power Shutdown switch on the rear of the computer with the tip of a
pen to turn off the computer; then turn the computer on again.
The computer does not
start from a diskette.
Check that the startup sequence is set to start the computer from the diskette
drive (see page 47).
Keyboard cannot be
opened.
Check that the locking lever for the hard disk drive is unlocked or that the
Kensington lock is not used.
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IBM ThinkPad 755CX User's Guide
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