Win7 computer resolution can not be adjusted how to do

First need to check whether the display supports that resolution, the method is: right click on the blank space of the desktop, open the screen resolution settings, click on the advanced settings, click to list all modes, then we You can see the supported resolutions in that list, and you can't adjust them if you don't support them.

Check if there is an external display. If there is an external display, please check if it is the copy mode, because the resolution can only be set to the maximum resolution value in the copy mode, which is the minimum resolution of the external device and the built-in display. For example, the resolution of the computer is 1280*1024, and the resolution of the external device is 1024*768. In the copy mode, the maximum resolution is 1024*768. If you need to set the resolution separately, you can set the resolution of the two screens separately by using the “Extension” display.