I didn't understand the question either
What I do is to clone the Win 7 on a new disk in the machine that I intend to use it in. I have also built a new Win 7 directly in the machine and then set it aside to use later.
A few months back my wifes Dell XP700 machine with Win XP went tits up with a fried montherboard (nothing new there) I took my Dell XP710 with a XP OS and swapped in her HD and was surprised that it worked almost flawlessly (it needed a driver for her different monitor). It sure saved a lot of work reloading all her programs. I kinda suspected that it's easier to swap same OS between similar Dell computers even with completely different programs, printers, monitors etc. (note: experience related and not rule based info)