So I am upgrading my system. I currently have an amd gigabyte f2a68hm-h with a10-7890k cpu with a Samsung evo ssd 250g with the os on it. I am going to i7 7700k cpu with a Msi z270 gaming pro carbin!!!!! My question is will I need to completely reformat my hard drive and by ne os ( just bought 3 months ago Windows 10) or can I possibly just download some drivers and not have to format hd and no buy os again?