After Windows 8.1 upgraded adjust screen brightness not working. So follow simple steps to solve screen brightness problem in Windows 8.1. I agree that when we update any app to its higher version, then it carries more features than that of older one. But, many times the updated version makes you face several problems. It happened with me also. I recently updated my OS from Windows 8 to 8.1 and by doing so, there were problems with the screen brightness. The system do not respond for adjustment of screen brightness. I was unable to adjust the screen brightness from low to high or a vice-versa.
So, I worked over it for few hours and finally I solved that problem. So, if you have such problem, then follow the steps below.
How To Fix Brightness Not Working In Windows 8.1
Goto Windows Search and type “Device Manager” and click settings.
Now click Device Manager.
Find display adapters Open the Display adapters and extract it.
Right click on the graphics card and click “Update Driver Software“.
Now select “Browse my computer for driver software” manually.
Then from the list, select/choose “Microsoft Basic Display Adapter” and apply.
Solution 2: Watch Video Tutorial
Note: This solution also worked in Windows 7, Windows 8, Windows Vista, Windows 8.1, and Windows 10.
Adjust screen brightness not working in Windows 8.1 is a most common error after upgrade Windows 8.1. If the above steps are not working for you, then please comment below. I will try my best to solve your problems. If you’re brightness not working in Windows 10, then follow below post.