Lenovo ThinkPadP50, User Manual

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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 display to another computer to make sure that it works.
2. Reconnect the external display to your computer.
3. Refer to the manual shipped with the external display to check the resolutions and refresh rates that
are supported.
– If the external display supports the same resolution as the computer display or a higher resolution,
view output on the external display or on both the external display and the computer display.
– If the external display supports a lower resolution than the computer display, view output on the
external display only. (If you view output on both the computer display and the external display,
the external display screen will be blank or distorted.)
• Problem : You cannot set a higher resolution than the present one on your external display.
Solution : Make sure that the monitor type and other information is correct by doing the following:
1. Connect the external display to the monitor connector, and then connect the monitor to an electrical
outlet.
2. Turn on the external display and the computer.
3. Right-click on the desktop, and do the following:
– For Windows 7: Click Screen resolution .
– For Windows 10: Click Display settings ➙ Advanced display settings .
Note: If your computer cannot detect the external display, click the Detect button.
4. Click the icon for the desired monitor (the Monitor-2 icon is for the external display).
5. Do the following:
– For Windows 7: Click Advanced settings .
– For Windows 10: Click Display adapter properties .
6. Click the Monitor tab. Check the monitor information to make sure that the monitor type is correct. If
it is, click OK to close the window; otherwise proceed with the following steps.
7. If more than two monitor types are displayed, select Generic PnP Monitor or Generic Non-PnP
Monitor .
Note: If the problem still is not solved, continue the following steps to update the monitor driver.
8. Click Properties . If you are prompted for an administrator password or confirmation, type the
password or provide confirmation.
9. Click the Driver tab, and then click Update driver .
10. Click Browse my computer for driver software , and then click Let me pick from a list of device
drivers on my computer .
11. Clear the Show compatible hardware check box .
12. Select the correct manufacturer and model for the external display. If you cannot find your monitor on
the list, stop the installation of this driver and use the driver shipped with your monitor.
13. After updating the driver, click Close .
• Problem : The screen is unreadable or distorted.
Solution : Make sure that:
– The monitor information is correct and the appropriate monitor type is selected. Refer to the solution
to the above problem.
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ThinkPad P50 User Guide