Windows 10: Unable to adjust screen brightness after 1803 upgrade

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?

:)

 

Can't adjust screen brightness after Win10 ver 1803 OS build 17134.1 update

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Adjust Screen Brightness and Resolution in Windows 10

The screen brightness adjustment keys of my HP Pavilion laptop are not recognized by Windows 10. It is so bright that it is harming our eyes. Also, I followed the suggested alternate steps from many websites and none of them worked as the brightness adjustment
option is not at all available even not inside Control Panel.

Please note that before installing Windows 10, I got notification that my laptop is compatible for the upgrade. Can you please help?