This new behavior results in a more consistent and battery friendly experience. If a person adjusts their display brightness, that brightness will now be remembered as their preferred brightness whether they are on battery or connected to a charger. Microsoft is modifying the display brightness behavior so that this can no longer happen.

Starting with Windows 10 build 18282, Microsoft heard your feedback about a specific case where a display can become brighter when transitioning from a battery charger to battery power. Starting with Windows 10 build 17639, Microsoft removed the display brightness slider in Control Panel Power Options and the “Display brightness” section under Power Options Advanced Settings. If the Screen brightness option isn't available, your PC might not support brightness adjustment or you might need to update your display drivers. Or, if you're in a dark room, you might want to make the screen less bright.Ī brighter display uses more power, which reduces battery life. 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. If you have a laptop or tablet with a built-in display, you might need to occasionally change the screen brightness level. How to Change Brightness of Built-in Display in Windows 10