Lenovo M5800 Lenovo M5800 User Guide - Page 44

Intermittent problems, Keyboard, mouse, or pointing device problems

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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". 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.) 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 34 • "The mouse or pointing device does not work" on page 35 • "The pointer on the screen does not move smoothly with the mouse" on page 35 • "The wireless keyboard does not work" on page 35 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 to a function. Use the help system in the Enhanced Performance Customization Keyboard program to help diagnose problems with the Rapid Access buttons. To open the Enhanced Performance Customization Keyboard program, do one of the following: - On the Windows 7 operating system, do the following: 1. Click Start ➙ Control Panel. 2. Click Hardware and Sound. 3. Click Devices and Printers. 4. Double-click USB Enhanced Performance Keyboard. The USB Enhanced Performance Keyboard Customization program starts. - On the Windows 8 operating system, do the following: 1. Open Control Panel. 34 Lenovo M5800 User Guide

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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”.
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.)
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 34
•
“The mouse or pointing device does not work” on page 35
•
“The pointer on the screen does not move smoothly with the mouse” on page 35
•
“The wireless keyboard does not work” on page 35
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
to a function. Use the help system in the Enhanced Performance Customization Keyboard program to
help diagnose problems with the Rapid Access buttons.
To open the Enhanced Performance Customization Keyboard program, do one of the following:
–
On the Windows 7 operating system, do the following:
1. Click
Start
➙
Control Panel
.
2. Click
Hardware and Sound
.
3. Click
Devices and Printers
.
4. Double-click
USB Enhanced Performance Keyboard
. The USB Enhanced Performance
Keyboard Customization program starts.
–
On the Windows 8 operating system, do the following:
1. Open Control Panel.
34
Lenovo M5800 User Guide