Windows display drivers play an important role in adjusting the brightness and contrast of your display. Windows 10 – Brightness Not Working (Surface Pro 3) Posted on by Michael Lane. There are also dedicated buttons present … It shows 100%. Checked it in three different OS Windows 7, 10 and Ubuntu. The brightness setting in the taskbar doesn’t work at all. Fixed: can't adjust brightness on Windows 10. Updating them either directly via Settings as multiple manufacturers push the update through, or via the manufacturer’s websitecould resolve the issue. follow the procedure below to resolve the issue. How to adjust the brightness in Windows 10 … I tried many times in the app tray and in the settings > brightness. To have them work - and it appears to me that the 630 too is disabled although Device Manager says otherwise, I must 'Disable' and then 'Enable' the driver manually. This problem in the relevant drivers doesn’t allow you to adjust your display brightness.

Look up for the Display Adapters in Device Manager.

Many systems have a facility called Adaptive Brightness which detects the light conditions in the proximity of the system and adjusts the screen brightness accordingly. Cortona was the initial problem it seemed to take over when I typed in reduce brightness I couldn’t see the slider for brightness after that.