Hello everyone, Really hoping someone can help. I am giving my Mac Pro 4,1 (Flashed to 5,1) to a friend, i have wiped all my drives and have put one drive back in the Mac Pro. I am trying to install Windows 10 by DVD (like I did originally) but soon after Windows 10 is installed, when I install bootcamp drivers 5.1.5621 (as i did originally) the system blue screens a few seconds after logging in. I don't have OSX installed and never have on this machine, it was a Windows 10 only machine. I have no idea what to do.. it used to work for me..I had upgraded to an RX580. I am currently using the old Saphire EFI card to reinstall Windows and the Bootcamp drivers. I will then try and uninstall all the graphics drivers installed through the bootcamp ones and then swap the card with the RX580 and manually install it's drivers. Anyone have any idea what I could be doing wrong? Is it also really necessary to install the bootcamp drivers? As Windows seems to find most things anyway.