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Actions:
Disable any background programs, such as AntiVirus or Desktop Themes.
Ensure that video resolution is set to less than 1152 x 864.
If these actions do not correct the problem, and you need technical assistance, see Lenovo Support
Web site on page 29.
Invalid disc or no disc found message
Symptom: Invalid disc or no disc found message
Actions:
Ensure that a DVD disc is in the drive with the shiny side of the disc facing down.
Ensure that video resolution is set to less than 1152 x 864.
On computers that have a CD-ROM or CD-RW drive in addition to a DVD-ROM drive, make sure that the
DVD disc is in the drive labeled DVD .
If these actions do not correct the problem, and you need technical assistance, see Lenovo Support
Web site on page 29.
Intermittent problems
Symptom: A problem occurs only occasionally and is dif cult to repeat.
Actions:
Verify that all cables and cords are securely connected to the computer and attached devices.
Verify that when the computer is on, the fan is not blocked (there is air ow around the fan), and the fan is
working. If air ow is blocked or the fan is not working, the computer might overheat.
If SCSI devices are installed, verify that the last external device in each SCSI chain is terminated correctly.
(See your SCSI documentation.)
If these actions do not correct the problem, and you need technical assistance, see Lenovo Support
Web site on page 29.
Keyboard, mouse, or pointing device problems
Select your symptom from the following list:
All or some keys on the keyboard do not work on page 39
The mouse or pointing device does not work on page 40
The pointer on the screen does not move smoothly with the mouse on page 40
The ngerprint reader does not work on page 40
The wireless keyboard does not work on page 41
All or some keys on the keyboard do not work
Symptom: All or some keys on the keyboard do not work.
Actions:
Verify that the keyboard cable is securely connected to the correct connector on the computer.
If you are using an Enhanced Performance USB keyboard and one or more of the Rapid Access buttons
are the only keys that are not working, these buttons might have been disabled or have not been assigned
Chapter 5
.
Troubleshooting and diagnostics
39
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