First of all I apologize if something similar was threaded, I just couldn't find anything to fix my problem.
I have a Windows 7 Ultimate x64, installed and activated. Fully licenced and legal (and working absolutely great). Now I've bought a new HDD, and want to reinstall OS on it. But the problem is I've lost my product key (and the original DVD with it). Now, the DVD is not the problem, I've managed to find one from a friend, but the key is a total mystery to me. I've tried all sorts of finding progs, but with no success. How can I find this thing for my reinstall/reactivation? Thnx