If it downloads the Graphics driver, restart your computer, and the issue should be resolved. If you have recently installed the new Windows, we recommend checking Windows updates as it can download the device drivers automatically for your graphics card. Check If Windows Downloaded the Latest Driver
Once done, install the driver and check if the brightness issue still persists.ģ.Search for the latest driver and download it Download Latest Driver.To download the latest driver, go to the manufacturer’s website.Therefore, make sure you are using the latest video card driver. Having an outdated driver can be involved in causing brightness not changing issues, as drivers are important for controlling brightness. Now run the installer and follow the on-screen instruction to install the driver.Select Windows 8 or lower from the menu.Go to the Compatibility tab and tick Run This Program In Compatibility Mode For.Right-click the installer and click Properties.To do that, first, go to the Graphics card manufacturer’s website.The reason behind using compatibility mode is when a driver is created for the lower version of Windows and does not run properly in the latest version, installing the driver in compatibility mode prevents the issue and also runs the driver properly in the latest version. If you have recently downloaded the video card driver, we advise you to uninstall it and install the same driver in compatibility mode for the lower version as most of the affected users have managed to resolve the brightness won’t change issue. Download The Same Driver in Compatibility Mode PC users don’t need to worry about it as they can control or adjust their brightness using the monitor buttons. The main reason that can cause the issue is a corrupted video driver as it uses to provide and control brightness.
How to Fix Laptop Brightness Won’t Change? Some users cannot change the brightness level using a slider, and others have managed to use the slider, but nothing happens when they slide from left to right. Three different issues were reported related to this brightness issue. Laptop users suffering from an issue in which they are unable to change the brightness of their laptops.