I installed Windows 10 Pro on it's own SSD using this guide: http://fgimian.github.io/blog/2016/03/12/installing-windows-10-on-a-mac-without-bootcamp/ Installation was easy. Microsoft's warning about the Creators Update can be ignored. It installed fine using this method. (I previously installed the Anniversary Update version as Microsoft instructed and then updated, but I found that's not necessary.) However, almost every time I try to boot Windows 10 (holding the option key at startup and selecting the drive) it will not boot. It often shows the Windows logo with no spinning dots and just hangs there. So I restart it and then when it comes up the spinning dots are there and it attempts automatic repair. Then it says it can't repair it and wants me to restart. So I restart and then it starts normally. It does that every day. Do you have any suggestions on what I can do? I've tried reinstalling Windows and it behaves the same way. Would it be better to install Windows 7?