I just purchased a new laptop with Windows 10 home and i really do not like it. I know that for Windows 10 the product/activation keys are linked to the hardware itself. Say i was to uninstall windows 10 home and install windows 8. (i know i would need a key). Than later on decide maybe I wanted 10 back. Would all i have to do is find a windows 10 installation disk(i dont have one)and it would install picking up the key from the hardware? Or would i have to repurchase windows