Windows 10 Brightness Not Working. If the issue is with your Computer or a Laptop you should try using Restoro which can scan the repositories and replace corrupt and missing files. Often, it's just a random bug or glitch that you can resolve rather.
This problem in the relevant drivers doesn't allow you to adjust your display brightness. If this is not working for you, don't worry there is an easy way to fix it. So, for instance, the battery is running low and you find the brightness control not working.
If brightness control key are missing or not working on your PC or laptop, try restarting your computer, updating Windows and check if the problem persists.
If the issue is with your Computer or a Laptop you should try using Restoro which can scan the repositories and replace corrupt and missing files.
Of course brightnes settings didn't work. This works in most cases, where the issue is originated due to a system corruption. This issue mainly affects laptops running Intel processors.