Display brightness controls are not working after upgrading to windows 10
I faced the same issue on upgrading my Lenovo G505s laptop to windows 10. This is for non-adaptive screen. I have tried a plenty of tricks to solve this issue. But that didn't workout. Then one day, I tried to update its driver using Device Manager facility provided by windows. Because screen dimming works with Generic PnP Monitors and that needs to be done. Give it a try and let me know if it helps you. I'm using " Lenevo G505s " . To do that go to Device Manager>Display Adapter or Monitors>PnP-Display(Standard) adapter>Right click>Update driver>Browse My Computer>Let me pick from a list>Generic PnP Monitor>Done Steps to open Device Manager in Windows 8, 8.1 and 10 :- Press WIN + X or right click in left-bottom corner of the screen displayed Press M or click on Device Manager Now, you will see a screen as seen in the picture below. Now, double click on Monitors. You will see another screen as seen in the picture ...