Some Windows 11 users have reported issues with display brightness fluctuating on its own, here's how to fix it.Restarting your Windows 11 PC can help eliminate bugs that may be affecting the brightness control.Adjust brightness from the Action Center if the keyboard shortcut isn't working.Low battery levels can prevent brightness adjustments, consider charging or disabling Power Saver mode.Updating the Display Driver is crucial in resolving brightness control issues.Switching to Microsoft's Basic Display Adapter might help if your current driver is incompatible.Rolling back the Display Driver to a previous version can resolve problems after a system update.Disabling auto brightness and running the SFC Command can also fix brightness control not working.Lastly, updating Windows 11 to the latest version can eliminate bugs causing brightness control issues.Following these steps can help address the brightness control not working problem on Windows 11.