Win7 desktop computer can not adjust the resolution how to do

1, first check whether the display supports the resolution you want to set, the specific method is, right click on the blank space of the computer to select the "screen resolution" option, then click “ Advanced settings & rdquo; items;

2, then in the pop-up dialog box, under the "Adapters" tab, click the "List all modes" button, you can see inside The supported resolutions are not supported if you don't have the value you set, so you can't adjust them.

3, to confirm whether there is an external display, if the external display to see if it is copy mode, 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 use the “extension“ display mode so that both display resolutions can be set separately.

4, update the graphics card driver, the abnormality of the network card driver will also lead to incomplete resolution loading. If the driver installation CD is included, it is recommended to use the CD driver.
5, or not, then replace the video signal line and other monitors to test it. Different display screens use different control chips, and there may be compatibility problems. If it is not possible, it can be repaired or recommended to use the best resolution.