What should I do if win7 cannot detect dual screens?

What to do if win7 cannot detect dual screens

If you set the system to dual display mode, but one monitor has no display, you can do as follows Steps to troubleshoot:

1. Confirm whether the system detects two monitors. The method is: right-click the desktop and select "Screen Resolution" to confirm whether there are monitors 1 and 2 in the window.

2. If there is only one monitor, it proves that the second monitor is not detected at this time. You shouldcheck whether the video interface, video connection cable and monitor are abnormal. Any of the three If there is a problem with one of the monitors, the second monitor will not be detected.

3. If there are 2 monitors, press the win P key at this time to confirm whether the dual display mode (expanded and copied mode) is set, instead of only displaying the computer and projection end. If the above options are set correctly, you should reinstall or update the graphics driver and then confirm the fault.

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