To fix monitor input on your Windows 11/10 computer, do the following: Under the monitor name that is having the Input Not Supported error, click Display adapter properties for Display.

If you see Input Not Supported Monitor error on your Windows 11/10 PC, you can apply any of the solutions in this post to resolve the issue.

Simply reset the settings to resolve the problem. However, if these link errors occur randomly, there are other causes. In this case, switch off the monitor, remove the DisplayPort cable, and ...