And download and save the graphics driver by selecting your GPU model and OS architecture 32/64 bit. First Go to the manufacturer’s website according to your PC GPU ie, Intel, Nvidia, or AMD.
Reinstall the display driverĪs discussed this is a graphics driver related issue, and Reinstalling the display ( Graphics ) driver is the ultimate solution to fix screen brightness not working/increasing issue. you can also try this “Turnoff Adaptive brightness ” and check it may help you. Note: some users report Turnoff Adaptive brightness option from power options, allows them to customize the screen brightness. That’s all, restart your system and check on next login windows allows adjusting screen brightness.
You Can check And install latest updates from Settings ( Windows + I ) -> Update & Security -> windows update -> And check for updates.
of China Hungary India Indonesia Ireland Israel Italy Jamaica Japan Kuwait Latvia Lithuania Luxembourg Macao S.A.R.If the problem started after install windows 10 version 21H1, then make sure you have installed the latest Cumulative Update, As Microsoft mention: “ Addresses an issue with the brightness controls on some laptops after updating to the Windows Update.