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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, run the diagnostic programs (see “Lenovo Solution Center”
on page 74 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help,
and service” on page 75.
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, run the diagnostic programs (see “Lenovo Solution Center”
on page 74 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help,
and service” on page 75.
Intermittent problems
Symptom: A problem occurs only occasionally and is difcult 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 grill is not blocked (there is air ow around the grill), and the
fans are working. If airow is blocked or the fans are 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, run the diagnostic programs (see “Lenovo Solution Center”
on page 74
for instructions). If you need technical assistance, see Chapter 11 “Getting information, help,
and service” on page 75
.
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 63
• “The mouse or pointing device does not work” on page 64
• “The pointer on the screen does not move smoothly with the mouse” on page 64
• “The ngerprint reader does not work” on page 64
• “The wireless keyboard does not work” on page 65
All or some keys on the keyboard do not work
Symptom: All or some keys on the keyboard do not work.
Actions:
Chapter 10. Troubleshooting and diagnostics 63