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.

How do I fix my monitor Input Signal Out of range? To fix a monitor input signal out of range problem adjust the computer’s resolution to a compatible setting with the display.

A dual-monitor set-up can help to increase productivity, but what if your second screen isn't being detected? Here's what to try to fix the problem.