Dell OptiPlex GX240 - Manual (Page 171)

174 Solving Problems
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Did the Task Manager window or Close Program window appear?
Yes. Go to
step 2 .
No. Skip to step 4 .
2 Click the program that no longer responds.
3 Click End Task.
Is the computer operating properly?
Yes. The problem is resolved.
No. Go to
step 4 .
4 Click the Start button and select Shut Down.
Restart a Computer That Is Not Responding
1 Press and hold the power button until the computer turns off.
2 Press the power button to turn on the computer.
Repairing a Wet Computer
Spills, splashes, and excessive humidity can cause damage to the computer.
If an external device, such as a printer or modem, gets wet, contact the
manufacturer of the device for instructions.
CAUTION: Before you perform this procedure, see “ Safety First—
For You and Your Computer .”
Fill out the Diagnostics Checklist as you perform the following steps:
1 Turn off the computer and devices, disconnect them from their
electrical outlets, wait 10 to 20 seconds, and then open the computer
cover.
2 Let the computer dry for at least 24 hours. Make sure that it is
thoroughly dry before you proceed.
3 Remove all expansion cards installed in the computer except a video
expansion card.