Problems With The Keyboard Or Mouse; Monitor Problems - Lenovo ThinkCentre M79 Hardware Maintenance Manual

If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See
"Lenovo Solution Center" on page 86.

Problems with the keyboard or mouse

This section provides solutions to keyboard-related and mouse-related problems.
The mouse does not work
Solutions:
• Connect the mouse cable to a USB connector or PS/2 mouse connector.
Note: Depending on your keyboard, integrated USB connectors might be available to be used to
connect a USB mouse.
• Install the device drivers for the mouse.
• If you are using a USB mouse, enable the USB connectors in the BIOS settings. For more information,
see "Enabling or disabling a device" on page 65.
The pointer on the screen does not move smoothly with the mouse
Solution: Clean the mouse. For more information, see "Optical mouse" on page 72.
The fingerprint reader on the keyboard does not work
Solutions:
• Enroll your fingerprint correctly.
• Never scratch the surface of the reader with a hard, pointed object.
• Never scrap the surface of the reader with your nail or anything hard.
• Use or touch the reader with a clean finger.
• Ensure that the surface of your finger is the same with the one when you last enrolled.
The wireless keyboard does not work
Solutions:
• If the transceiver communications LED is not on, reconnect the transceiver and the keyboard.
• If the wireless keyboard does not work when the transceiver communications LED is on, restart your
computer.
If the problem persists after the restart, ensure that:
• The batteries are installed correctly.
• The batteries still retain their current.
• The distance from the wireless keyboard to the transceiver is less than 10 m (393.7 inches).
• The transceiver is installed fully.

Monitor problems

This section provides solutions to monitor-related problems.
My screen goes blank while the computer is on
Solutions: Your screen saver or power management might have been enabled. Do one of the following:
• Press a key to exit the screen saver.
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ThinkCentre M79 Hardware Maintenance Manual