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

win11What should I do if I cannot adjust the screen brightness? When we use win11, many users are asking what to do if the brightness of the computer screen is too bright but cannot be adjusted? Users can directly click {4d36e968-e325-11ce-bfc1-08002be10318} under the registry to set it up. Let this site carefully introduce to users the analysis of the problem that Win11 cannot adjust the screen brightness. .

Win11 cannot adjust the screen brightness problem analysis

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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