Simply put, if this happens to you, maybe this will work .
Go to your powercfg and restore the default scheme.
Press Win and type cmd. Right-click on Command Prompt and select Run as administrator.
In the shell that shows up, type this (or copy the text below):
text
powercfg -restoredefaultschemes
And then nothing will happen :)
That's okay! Restart your PC, and maybe the problem has been solved.
To see if it's working or not, press Win + P or go to Display Settings and look for Multiple displays, then click on Detect.
Stay safe!! ;)