I am building a pc on a budget and have been ordering parts when they are on sale, or bundled with other parts i need ect. I already got a new hard drive ordered in and am now just saving up the money to buy the graphics card and a windows 10 operating system. My question is, could i transfer my windows 10 from my current hard drive onto the new one once i get it all built? I know next to nothing about that kind of thing and don't really know if it's possible and if so how to do it. I originally had windows 7 and then upgraded to 10 for free, so I do not have a windows 10 disk.