Wait, Ive found a good way to explain it:
I have a old desktop, the desktop has a hard drive with windows installed on it.
I want to remove the hard drive from my old desktop, and put it in my new desktop.
My new desktop doesnt have a hard drive atall, as I want to use my old desktops hard drive.
Would windows work correctly as Ive switched it from my old PC to my new one?