I have an old Lenovo T510 laptop running Windows 10 Pro. Yes, I know, it doesn't officially support Windows 10. But I've been running Window 10 Pro on it happily and reliably for quite some time.... Until just now when I upgraded to version 1803.

Right after the upgrade I noticed my screen was very bright. I found that I am unable to adjust it at all using the keyboard brightness controls or the control panel. It's always at 100% bright even though the brightness control slider goes where ever I tell it. I've searched and tried some of the suggestions about uninstalling the driver and reinstalling, etc, but nothing has worked. I'd say the driver has a compatibility issue, but it was working just fine before 1803.

Does anyone have any suggestions on things to try before I take my chances on a roll-back of the 1803 upgrade?