So I got a computer from a friend a while back, and it was on windows 7 pro 32 bit, I proceeded to upgrade to windows 10 pro 32 bit, and got some parts to upgrade (as the original pc was custom built) and since I couldn't put all the ram I got, I looked around and found this... http://www.howtogeek.com/228042/how-to-switch-from-32-bit-windows-10-to-64-bit-windows-10/
But there was an issue. I now have 64 bit windows but it still says I need to activate it and I don't have a product key. So I'm not sure what to do, hopefully someone can help me. Thanks