Long story short, I have an AMD build that just seems to really really hate Windows 7. I've tried just about everything and it wont even complete the install. I was positive that the CPU was defective or something and as a last ditch effort installed a copy of 8.1. Everything runs great and no issues what so ever. The problem is that I don't have a key for 8.1. I do have a few Windows 7 keys that I could use to upgrade to 10, but since I cant even install 7 on this particular computer, I'm not sure how or if I can accomplish this. AFAIK, you can't just turn a 7 key into a 10 key. So my idea around this was to install 7 and upgrade it within a VM, extract the key and then use it on a fresh 10 install on the problem computer. Will this work? If not, any ideas?