Lenovo thinkpad L450 User Manual page 118

– For Windows 7 and Windows 8.1: Click Advanced settings.
– For Windows 10: Click Display adapter properties.
6. Click the Monitor tab.
7. Select the correct screen refresh rate.
• Problem: Wrong characters are displayed on the screen.
Solution: Did you follow the correct procedure when installing the operating system or program? If you
did, have the external monitor serviced.
• Problem: The Extend desktop function does not work.
Solution: Enable the Extend desktop function 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.
3. Right-click on the desktop, and do one of the following:
– For Windows 7 and Windows 8.1: Click Screen resolution.
– For Windows 10: Click Display settings, show the displayed window in full screen, and then
click Advanced display settings.
Note: If your computer cannot detect the external monitor, click the Detect button.
4. Click the Monitor-2 icon.
5. Select Extend these displays for multiple displays.
6. Click the Monitor-1 icon (for the primary display, the computer display).
7. Set the resolution for the primary display.
8. Click the Monitor-2 icon (for the external monitor).
9. Set the screen resolution for the secondary display.
10. Set the relative position of each monitor by dragging its icon. You can set the monitors in any relative
position, but the icons must touch each other.
11. Click OK to apply the changes.
Notes: To change the color settings, right-click on the desktop and do the following:
– For Windows 7 and Windows 8.1: Click Screen resolution. Click Advanced settings, select
the Monitor tab, then set Colors.
– For Windows 10: do the following:
a. Click Display settings
b. Show the displayed window in full screen, and then click Advanced display settings.
c. Click Color calibration. Then follow the instructions on the screen to change the color settings.
• Problem: If you use the Extend desktop function, you cannot set a higher resolution or higher refresh
rate on the secondary display.
Solution: Change the resolution and the color depth to lower settings for the primary display. Refer
to the solution to the above problem.
• Problem: Display switching does not work.
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