Error 173 when an AMD device is installed.

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?

Thank you.