Problems With The Display And Multimedia Devices - Lenovo ThinkPad Yoga 15 User Manual

– When the computer resumes normal operation
– When the TrackPoint pointing device is kept pressed for a long time
– When the temperature changes
• Problem: The TrackPoint pointing device or trackpad does not work.
Solution: Ensure that the TrackPoint pointing device or trackpad is enabled in the ThinkPad pointing
device setting window.
Keyboard problems
• Problem: All or some keys on the keyboard do not work.
Solution: If an external numeric keypad is connected:
1. Turn off the computer.
2. Remove the external numeric keypad.
3. Turn on the computer and try using the keyboard again.
If the keyboard problem is resolved, carefully reconnect the external numeric keypad and the external
keyboard. Ensure that you have seated the connectors correctly.
If the problem persists, ensure that the correct device driver is installed by doing the following:
1. Open Control Panel. Change the view of Control Panel from Category to Large icons or Small icons.
2. Click Keyboard.
3. Select the Hardware tab. In the Device Properties pane, ensure that you see this message: Device
Status: This device is working properly.
If keys on the keyboard still do not work, have the computer serviced.
• Problem: All or some keys on the external numeric keypad do not work.
Solution: Ensure that the external numeric keypad is correctly connected to the computer.

Problems with the display and multimedia devices

This topic includes the most common problems with displays and multimedia devices, including the
computer display, the external monitor, and audio devices.
Computer screen problems
• Problem: The screen is blank.
Solution: Do the following:
– Press the display mode-switching key
– If you are using the ac power adapter, or using the battery and the battery gauge shows that the battery
is not depleted, press the brightness-up key
– If your computer is in sleep mode, press Fn to resume from the sleep mode.
– If the problem persists, follow the solution for the following problem.
• Problem: The screen is unreadable or distorted.
Solution: Ensure that:
– The display device driver is installed correctly.
– The screen resolution and color quality are correctly set.
– The monitor type is correct.
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User Guide
to bring up the image.
to make the screen brighter.