I get an 'Error 173 - AMD installer cannot continue...' message even though AMD hardware is installed on my machine. I am running Windows 10 x64 under Bootcamp on a Retina display 27" iMac.
A snapshot of the error is:
And the Device Manager pane is:
The current drivers are over a year and a half old. I've been experiencing periodic crashes related to the display subsystem and I wanted to update the drivers and see if system stability was improved.
How do I install the updated drivers?
This site uses modified AMD Drivers to work on MACs with Bootcamp on it : BootCampDrivers.com: Turbo-charged AMD graphics drivers for Mac BootCamp users.
Otherwise you need to go to Apple to get AMD drivers for your MAC.
These are the official MAC Bootcamp drivers from AMD Download page: Apple Boot Camp Software Graphics Drivers | AMD