What should I do if the screen brightness cannot be adjusted in Windows 11? Solution to the problem of unable to adjust the brightness of win11 screen

php editor Xinyi will answer your question about the problem that the screen brightness of Win11 cannot be adjusted. Screen brightness adjustment in Win11 system is a common requirement, but sometimes it cannot be adjusted, causing inconvenience to users. This could be due to driver issues, incorrect system settings, or other reasons. Don’t worry, below we will introduce you some solutions to help you solve the problem of unable to adjust the screen brightness of Win11 and make your experience smoother.

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 opening the registry.

3. Copy "Computer\HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{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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