@chester69
Do you get the same error when you try to install Gigabyte's own motherboard CHIPSET drivers?
https://www.gigabyte.com/Motherboard/B450-AORUS-M-rev-10/support#support-dl-driver-chipset
If Gigabyte's own CHIPSET drivers install correctly and successfully than open a AMD Service Request (OFFICIAL AMD SUPPORT) and let them know about your issue.
Before installing the latest AMD CHIPSET driver download Microsoft Installer/Uninstaller App and run it. It will make your computer ready for a clean installation of the AMD CHIPSET drivers.
Unfortunately I can't upload the small MS App since that Option has be removed in this new AMD Forums Format.