Okay so i currently have an AMD build, FX-8350 cpu, ASUS Sabretooth mobo etc. Im upgrading to an intel i7-4970k and an MSI Z97 mobo. Due to boot issues and compatability issues i know ill have to do some system prep. I also dont feel like buying windows 7 again for a new activation key which ive seen other people do but some say you dont have to, but others say you need a new product key, its getting messy so im here to flatten it out once and for all. What are the exact steps i need to take to ensure a smooth upgrade. Thank you in advance.