Its a Fujitsu Siemens laptop and on the keyboard it has brightness controlls but when pressed they don`t seem to work., responce appreciated.
Fn Brightness Control
there should be a key labeled Fn on the bottom left of the keyboard close to alt or ctrl. press that key and the brighness key on the keyboard usually the down arrow and thre you have it.
It would probably be under your settings as well, but I would just try to hold down the brightness buttons and wait. Good luck!
Mine you have to hold down the fn key, on the left side, before the brightness will work, try that.
Usually you have to use the Function key together with the brightness key to change screen brightness.
Press and hold the Fn key then press the brightness key.
That brand doesn't have an option for that.
try Fn the Up arrow (: