Win10 system screen brightness can not be adjusted repair program

Win10 screen brightness can not be adjusted, or Win10 screen brightness adjustment after brightness has not changed, this is a lot of Win7/Win8.1 users after upgrading Win10 problems. Some people have tried a lot of methods can not fix this problem, the following small series will teach you a Win10 system screen brightness can not be adjusted to fix the program.

The problem is as follows:

1. First, try to uninstall the discrete graphics driver in safe mode. After uninstalling, the screen brightness can be adjusted freely;

2, second Check the device manager and found that the discrete graphics driver is not installed. After installing it again, the brightness cannot be adjusted freely.

Try the following solutions:

1. Right click on “Start Menu”——Select"Run”——Enter“regedit”, Enter the registry to open, and then expand:

{HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Class\\{4d36e968-e325-11ce-bfc1-08002be10318}

2, will 0000 and 0001 The KMD_EnableBrightnessInterface2 key in the value is modified to 0.

Note: If not the key, you can create a new, type DWORD. If there is no 0001, just modify the key value in 0000.

3, restart the device after the modification is completed, and then try to adjust the brightness.

The above is the Win10 system screen brightness can not be adjusted to fix the program, if this method still can not solve your problem, you can also refer to: Win10 system screen brightness can not be adjusted to deal with.