So, we going to focus more on that among various other solutions as well. Also, mainly an issue with the display adapter driver or the monitor driver is what that triggers this issue very frequently on your system. How to Fix Can’t Adjust Screen Brightness in Windows 10Īs we mentioned earlier, the main reason why you can’t adjust screen brightness in Windows 10 is the outdated device driver. Method 4: Restore Power Plan Settings to Default.Method 3: Use the Microsoft Basic Display Adapter.Method 2: Enable and Update Generic PnP Monitor Driver.Method 1: Update Display Adapter Drivers.How to Fix Can’t Adjust Screen Brightness in Windows 10.
