How to solve the problem of Win11 screen brightness being locked

Some friends reported that when adjusting the brightness of the Win11 computer screen, they found that the screen brightness was locked and could not be adjusted. So how to solve the problem of the Win11 screen brightness being locked? The editor below will give you a detailed introduction to the solution to the Win11 screen brightness being locked. If you are interested, you can take a look.

#1. "Win R" shortcut key to start running, enter "regedit" and press Enter to open.

2. After entering the registry editor, change "ComputerHKEY_LOCAL_MACHINESYSTEMControlSet001Control

Class{4d36e968-e325-11ce -bfc1-08002be10318}" into the address bar above and press Enter to locate it.

3. Then click the "0000" folder on the left and double-click to open the "FeatureTestControl" on the right.

4. Finally, in the window that opens, change the "numeric data" to "ffff", click OK to save, and then Just restart the computer.

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