Why isn’t my Brightness button working on Windows 11? There can be many reasons why our brightness button is not working on Windows 11. The main cause of the problem is a corrupted driver.

If Windows Adaptive Brightness is not working or turning off, you need to update Graphics driver, use Power Troubleshooter & turn off some settings in your NVIDIA or AMD graphics driver control panel.

Has anyone else experienced this? The buttons themselves work, but when I hit the volume or brightness or contrast buttons, nothing happens. I've rebooted, and I'm running all the latest updates ...