So my hard drive got corrupted and i lost everything. It ran windows 8 but i upgraded to 10. I tried to boot windows 10 off usb but it didnt work. I bought a windows 7 disc but i dont have the money for a key or money for anything else. Im wondering, is windows 10 digitally signed to my pc or do i have to do some game genie magic to get it to 8 (horrible btw) then to 10.