There is a new driver for the chipset from AMD 2.03.12.0657 from 19 March 2020
When you try to install (update) it, AMD GPIO Controller and AMD PCI are installed. The rest, unfortunately not. In addition, the progress board shows 0% all the time. Do you also have that?
The older driver 2.01.15.2138 from January installs without any problem.
What could be the reason for this?
Motherboard MSI B450 Gaming Plus MAX - latest BIOS.
Ryzen 5 3600
Windows 10 1909 with all updates.
I don't know English well, so I put a Google translator translation here.