how to change brightness in windows 10

[coolfirepvper1]

i have tried several ways to change my brightness but none of them worked i really need help

 

[marksavio]

usual way
http://www.tomsguide.com/answers/id-3368193/adjust-screen-brightness.html

or reinstall your display drivers
https://answers.microsoft.com/en-us/windows/forum/windows_10-other_settings/why-cant-i-change-my-screen-brightness-with/3826e3cc-6041-468c-b6f2-3377dfd1fdc8