Intermittent Problems; Keyboard, Mouse, Or Pointing Device Problems - Lenovo 3569 Maintenance Manual

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 Lenovo Solution Center program. If you need technical
assistance, see "Lenovo Support Web site" on page 31.
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, ensure that the
DVD disc is in the drive labeled "DVD".
If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical
assistance, see "Lenovo Support Web site" on page 31.

Intermittent problems

Symptom: A problem occurs only occasionally and is difficult 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 flow around the grill), and the
fans are working. If airflow 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 Lenovo Solution Center program. If you need technical
assistance, see "Lenovo Support Web site" on page 31.

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 41
• "The mouse or pointing device does not work" on page 42
• "The pointer on the screen does not move smoothly with the mouse" on page 43
• "The fingerprint reader does not work" on page 43
• "The wireless keyboard does not work" on page 43
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
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