Dell OptiPlex GX240 - Manual (Page 162)

Solving Problems 165
2 If you are using a PS/2 mouse, run the Mouse test in the Pointing
Devices device group in the Dell Diagnostics .
Did the tests complete successfully?
Yes. Go to step 3.
No.
Contact Dell for technical assistance.
3 Turn off the computer, connect another mouse to the computer, and
then turn the computer on.
If you do not have another mouse,
contact Dell for technical
assistance.
Is the mouse functioning properly?
Yes. The original mouse is defective. The problem is resolved.
No.
Contact Dell for technical assistance.
Keyboard Problems
Basic Checks:
• Disconnect the cable from the computer and check the cable
connector for bent or broken pins. Check for damaged or frayed cables.
• If the cable is not damaged, make sure that it is firmly connected to
the computer.
• Check for interference. Keyboard extension cables can cause problems.
• Restart the computer.
If the problem still exists after you complete the basic checks, fill out the
Diagnostic Checklist as you perform the following steps:
1 Turn off the computer, and then disconnect the keyboard cable and
check it for bent or broken pins.
Do you see bent pins?
Yes. If they can be straightened, straighten them and go to step 2. If
they cannot be straightened or are broken, you must replace the
keyboard.
No. Go to step 2.
2 Reconnect the keyboard to the computer.
Make sure the keyboard cable is firmly connected to computer.