Or you can open the device manager click action then scan for hardware changes to install the default display driver.On next start windows automatically install the default display driver on your PC.Open control panel -> programs and feature -> here locate any driver named NVIDIA or AMD uninstall them and reboot your PC Checkmark on delete the driver software for this device then, Click uninstall again when ask for confirmation then reboot your PC.Īpply if you have NVIDIA or AMD graphics drivers installed:.Expand Display Adapters, right-click on display adapter (or graphics driver) select uninstall device,.This will display all installed device driver list,.Press Windows key + X select Device Manager,.Here is another ultimate solution to fix the screen brightness not working issue on Windows 10. Now check if you are able to increase the screen brightness.expand Enable adaptive brightness and then turn off the feature for On battery and Plugged in options.In the new window expand Display to open up the listings under it.Next click the Change advance power settings link,.Click the Change plan settings link next to your current power plan.Press Windows key + R, type powercfg.cpl and press enter key,.Also, several users report, the screen brightness problem resolved after Turn off the adaptive brightness feature.
There are chances the adaptive brightness feature prevents to change screen brightness. Nowadays most displays or laptops equipped with an ambient light sensor, And the adaptive brightness feature in Windows 10 automatically adjusts the screen brightness to match the ambient light. Once done restart your PC to apply them and check the status of Screen brightness settings Turn off adaptive brightness.This will start download windows updates from the Microsoft server, and Update the display driver as well.
Microsoft regularly releases windows updates with the latest bug fix and security improvements. Press one of them or probably have to hold down the Fn key while using these keys and check if you are able to change the screen brightness. If you’re a laptop user, Look for a sun symbol on your keyboard these keys are function keys on the laptop that used to adjust (Up or down) screen brightness on your laptop. This will restart all drivers including the Graphics driver and fix if a temporary glitch prevents screen brightness function normally. If this is the very first time, you are unable to adjust the display brightness with dedicated keys on your keyboard, or brightness slider we recommend reboot your PC.
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