IBM ThinkPad 755CX, Manual

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What If Your Computer Does Not Work?
Commonly Asked Problems and Actions
This section provides a list of possible common problems that you
might have with their corresponding actions.
P: A memory shortage or memory error occurs.
A:
Do one of the following:
Unload any unnecessary drivers from the CONFIG.SYS file.
If you are using DOS, use the multiple configuration setup
of DOS (refer to the documents supplied with the DOS
operating system).
P: The external display screen is blank.
A:
Do the following:
1. Make sure the display device parameter of the ThinkPad
Features program is correctly specified to use the external
display.
2. Set the computer not to enter suspend mode when the
LCD is closed by using the ThinkPad Features program.
P: The computer does not resume from suspend mode, or
the suspend indicator stays on and the computer does
not work.
A:
The computer automatically enters suspend or hibernation
mode when the battery pack is empty. Do one of the following:
Replace the battery pack with a fully charged one.
Connect the AC Adapter to the computer and charge the
battery pack.
P: When using Windows, the cursor does not move after
normal operation is resumed from one of the
power-saving modes.
A:
Make sure you have installed Windows with the APM option by
following the procedures on page 177.
P:
The computer does not enter suspend or hibernation
mode.
A:
Do one of the following:
If the computer is attached to the Dock I, suspend mode is
disabled.
If the AC Adapter is used and the computer is
communicating, suspend and hibernation modes are
disabled.
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IBM ThinkPad 755CX User's Guide