How to change display brightness with keyboard?

I've installed Windows 10, HP Hotkeys, and HP WLAN button onto a new SSD on my 645 G4.
The top row of the keyboard works as expected, except for the brightness control.

Does anyone have any idea why this doesn't work?

 

So after a reboot it became clear to me, it's the old HP framework that's missing. Nothing new.


However, I've never found a good solution for this. I've tried what's been suggested in forums but still nothing.

Anyone?