Acer Monitor Input Not Supported. All good until upgraded to larger Acer SA240Y monitors (Dual) Now cannot see POST or get into BIOS as 'InputNotSupported' There is no adjustment on the monitors Connectivity is Radeon RX590 GFX_Port to HDMI System is UEFI Replacing with earlier monitor is fine.
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The issue you've encountered might be due to incorrect display drivers or your resolution has been set to a resolution that is not supported on your monitor For us to to better assist you with the display issue we'd like to know if you made any updates to your computer before experiencing the issue.
[SOLVED] Input Not Supported on Monitor Driver Easy
This problem happens especially when you’re using multiple monitors Meanwhile most of the people who are having this problem are using the Acer monitors The input is not supported by your monitor because your screen resolution is set to the wrong resolution In addition your monitor driver issue can result in the error But don’t worry We’ll help you fix your problem Try these fixes Author Lillian Lai.
Extend Screens Showing "Input Not Supported" Problem
Old or corrupted drivers can cause the input not supported issue on the Acer monitor So you should ensure your drivers are uptodate and keep them in perfect condition This time you should boot into safe mode with networking since you need to download the drivers from the Internet.
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Input not Supported message — Acer Community
Acer Monitors Input Not Supported X570A PRO MSI Global
What to Do If Acer Monitor Says Input Not Supported?
Input not Supported message It would seem that your video setting Disconnect the external monitor try different display resolution and refresh rate on your laptop and it should fix the issue Go to your Desktop rightclick your mouse and go to Display Settings The following panel will open.
