Lenovo ThinkPad Yoga 14 (English) User Guide - ThinkPad Yoga 14 - Page 107

External monitor problems, Troubleshoot, ColourManagement, Advanced, Windows, ColourSystemDefaults

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device is working correctly. If the device is not working correctly, click the Troubleshoot button and follow the instructions on the screen. Note: The device driver name depends on the video chip that has been installed on your computer. 5. Click the Colour Management tab, and then click the Colour Management button. In the displayed Colour Management window, click the Advanced tab and ensure that the settings in the Windows Colour System Defaults area are set as desired. If you are prompted for an administrator password or confirmation, type the password or provide confirmation. • Problem: Incorrect characters are displayed on the screen. Solution: Did you install the operating system or application program correctly? If they are installed and configured correctly, have the computer serviced. • Problem: The screen stays on even after you turn off your computer. Solution: Press and hold the power button for four seconds or more to turn off your computer; then turn it on again. • Problem: Missing, discolored, or bright dots appear on the screen every time you turn on your computer. Solution: This is an intrinsic characteristic of the TFT technology. Your computer display contains multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen might exist all the time. External monitor problems • Problem: The external monitor is blank. Solution: To bring up the image, press the display mode-switching key monitor. If the problem persists, do the following: and select the desired 1. Connect the external monitor to another computer to ensure that it works. 2. Reconnect the external monitor to your computer. 3. Refer to the manual shipped with the external monitor to check the resolutions and refresh rates that are supported. - If the external monitor supports the same resolution as the computer display or a higher resolution, view output on the external monitor or on both the external monitor and the computer display. - If the external monitor supports a lower resolution than the computer display, view output on the external monitor only. (If you view output on both the computer display and the external monitor, the external monitor screen will be blank or distorted.) • Problem: You cannot set a higher resolution than the present one on your external monitor. Solution: Make sure that the monitor type and other information is correct. If necessary, update the monitor driver. See "Using an external display" on page 44. • Problem: The screen is unreadable or distorted. Solution: Ensure that: - The monitor information is correct and the appropriate monitor type is selected. Refer to the solution to the above problem. - Ensure that an appropriate refresh rate is selected by doing the following: 1. Connect the external monitor to the monitor connector, and then connect the monitor to an electrical outlet. 2. Turn on the external monitor and the computer. Chapter 7. Troubleshooting computer problems 91

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device is working correctly. If the device is not working correctly, click the
Troubleshoot
button and
follow the instructions on the screen.
Note:
The device driver name depends on the video chip that has been installed on your computer.
5. Click the
ColourManagement
tab, and then click the
ColourManagement
button. In the displayed
Colour Management window, click the
Advanced
tab and ensure that the settings in the
Windows
ColourSystemDefaults
area are set as desired. If you are prompted for an administrator password
or confirmation, type the password or provide confirmation.
•
Problem
: Incorrect characters are displayed on the screen.
Solution
: Did you install the operating system or application program correctly? If they are installed and
configured correctly, have the computer serviced.
•
Problem
: The screen stays on even after you turn off your computer.
Solution
: Press and hold the power button for four seconds or more to turn off your computer; then
turn it on again.
•
Problem
: Missing, discolored, or bright dots appear on the screen every time you turn on your computer.
Solution
: This is an intrinsic characteristic of the TFT technology. Your computer display contains
multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen
might exist all the time.
External monitor problems
•
Problem
: The external monitor is blank.
Solution
: To bring up the image, press the display mode-switching key
and select the desired
monitor. If the problem persists, do the following:
1. Connect the external monitor to another computer to ensure that it works.
2. Reconnect the external monitor to your computer.
3. Refer to the manual shipped with the external monitor to check the resolutions and refresh rates that
are supported.
– If the external monitor supports the same resolution as the computer display or a higher resolution,
view output on the external monitor or on both the external monitor and the computer display.
– If the external monitor supports a lower resolution than the computer display, view output on the
external monitor only. (If you view output on both the computer display and the external monitor,
the external monitor screen will be blank or distorted.)
•
Problem
: You cannot set a higher resolution than the present one on your external monitor.
Solution
: Make sure that the monitor type and other information is correct. If necessary, update the
monitor driver. See “Using an external display” on page 44.
•
Problem
: The screen is unreadable or distorted.
Solution
: Ensure that:
– The monitor information is correct and the appropriate monitor type is selected. Refer to the solution
to the above problem.
– Ensure that an appropriate refresh rate is selected by doing the following:
1. Connect the external monitor to the monitor connector, and then connect the monitor to an
electrical outlet.
2. Turn on the external monitor and the computer.
Chapter 7
.
Troubleshooting computer problems
91