I'm having the same issue.
I have tried the RegEdit fix, found excess registries but after deleting these, rebooting, reinstalling and then rebooting again I am still getting the "Driver not installed!" error.
I tried the bin folder like you mentioned as well and still no dice.
Running Rysen 5 3600 on a B450 Aorus Elite, Radeon RX 570 8GB, 32GB RAM. All drivers up to date, Windows up to date, ran CC Cleaner to make sure there weren't any random temp files messing with me. Still no dice.
Any other tips welcomed
Dice Please.