MicrosoftWindowsWindows 11
Want to instantly adjust your screens brightness on a Windows computer?
All the methods to change screen brightness on a Windows PC
Most portable computers, i.e.
laptops, come with adjustable screen brightness.

Running the command in the example above will change the screens brightness level to 75%.
you could use this command to instantly change your screens brightness level to any percentage between 1 and 100.
Let us now use the following cmdlet tochange its brightness level using PowerShell.

Remember to replace XXX with an integer between 1 and 100 (percentage of the brightness level).
Running the command in the image above will change the screens brightness level to 55 percent.
This concludes the two methods to change the screens brightness level on a Windows computer using the command line.

The command line method to change the screens brightness is quick and convenient.
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source: www.itechtics.com