Monitor Problems - Lenovo ThinkCentre M53 Hardware Maintenance Manual

• 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.
• Press the power button to resume the computer from sleep or hibernation mode.
The monitor works when I turn on the computer, but goes blank when I start some
application programs
Solutions:
• Connect the monitor signal cable from your monitor to an appropriate connector on the computer. A
loose cable might cause intermittent problems.
• Install the device drivers for the application programs. Refer to the documentation for the affected
application program to check whether any device drivers are required.
The image appears to be flickering
Solution: Reset the refresh rate.
1. Open Control Panel.
Note: To open Control Panel on Windows 8.1, see "Accessing Control Panel on the Windows 8.1
operating system" on page 49
2. Click Hardware and Sound ➙ Adjust screen resolution ➙ Advanced settings.
3. Click the Monitor tab to reset the refresh rate.
Set the refresh rate to be the highest, noninterlaced refresh rate supported on your computer. Refer to
the documentation that comes with your monitor for the supported refresh rates.
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Chapter 8 Troubleshooting and diagnostics
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