Hey guys sorry if this is the wrong topic, please tell me if so but I really need help. I have a macbook pro 13 retina, and I partitioned my SSD and installed a windows 8.1 pro into it and then updated to a windows 10 using the microsoft store. It worked fine for a while but now when I try to power it up, it just flashes and powers off. When I do it two times straight it shows a windows screen which says it could not load up correctly. In the advanced options, I tried recovery from a disk image but couldn't, tried using its own repair tool, which also didn't work, then I reset the windows and kept the files. It looked all right after that but when I power it on and off I got the same error. My Mac OSX partition is working fine. Also if I restore my partition and do a clean install of the windows do I lose the product key I used? Im not from the US so I do not know if I can use the phone activation system. How should I proceed??