If you have a laptop or tablet, you might need to occasionally change the screen brightness. For example, if you want to use your laptop outdoors on a sunny day, you might need a brighter screen to see the display clearly. Or, if you’re in a dark room, you might want to make the screen less bright.
A brighter display uses more power, which reduces battery life.
The Display brightness setting in Power Options let’s users specify the default display brightness level. This setting applies only to portable computers that support Windows control of the brightness level of an integrated display device.
This tutorial will show you how to add or remove the Display brightness setting under Display in Power Options for all users in Windows 7, Windows 8, and Windows 10.