Usually, this error means the resolution of your computer has been set to one that is not supported on the monitor. Sometimes the same error occurs when you are playing games on Windows or through a third-party client like Steam. Sometimes when booting your PC, the Windows logo appears with a loading icon and then the screen turns black, saying “Input Not Supported” on the monitor.
If you are looking for solutions to fix this issue, you have come to the right place and you can try four effective methods offered by MiniTool Solution to let your monitor run properly again. While you run games in Windows 10/8/7, you may experience the input not support issue that usually occurs in an Acer monitor.
