I wanted to install a bare metal version of Windows 10 on a late 2009 Mac Mini that a friend recently gave me. I did not want to run Bootcamp. Just good ole' Windows. When I did an initial install from a Windows 10 creation tool listed HERE: -us/software-download/windows10 I was able to get 10 installed, but it kept trying to install a video driver update for the Nvidia Geforce 9400 automatically, and created a boot loop upon reboot. I was unable to recover at all through any methods. Hrmm. So I then reformatted and installed again, and turned off automatic updates, then ran a reboot. Success in blocking the updated driver install, but generic Windows driver now. So I attempted using the GeForce site's recognition tool as well as downloading several drivers through their site, all with the same results as before. I THEN attempted to use Nvidia drivers listed in Bootcamp to no avail as well. Further research brought me to this forum page, and upon learning that Apple indicated that this hardware is not supported for Windows 10, I decided to take it as a personal challenge.