I believe WD Magician has a cloning feature you can use.
I say this pretty much every time it comes up, but I would advise against using Windows 7. It's already 6 months out of date in terms of security. I'd take this chance to move to Windows 10 or 8.1.
EDIT: I might be thinking of Samsung Magician, not WD. Still, I'd recommend moving to an OS that is receiving security updates either way.
