What should I do if the screen brightness cannot be adjusted in Win11? What should I do if the brightness of the screen in Win11 cannot be adjusted?

Problem: Unable to adjust Win11 screen brightness If you are unable to adjust the screen brightness when using Windows 11, this may affect your visual health. This summary provides several steps to help you resolve this issue. If you need a more detailed guide, visit the PHP Chinese website for a complete and easy-to-follow tutorial.

What to do if win11 screen brightness cannot be adjusted

1. Press "Win+R" on the keyboard at the same time to open Run.

2. Enter "regedit" and press Enter to confirm to open the registry.

3. Copy "Computer HKEY_LOCAL_MACHINESYSTEMControlSet001ControlClass{4d36e968-e325-11ce-bfc1-08002be10318}" into the path above.

4. Click the "0000" folder on the left and double-click to open "FeatureTestControl".

5. Change the numerical data to "ffff", click "OK", and then restart the computer to adjust the brightness normally.

6. In addition to using the system to adjust the brightness, we can also use the brightness adjustment function that comes with the monitor.

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