You need to reinstall Windows on your computer but what about the product key you have to enter in order to ‘activate’ Windows? It should be on a sticker somewhere on your PC’s casing. The trouble is, that sticker may have become scratched, or torn off, or worn away, or suffered some other mishap that has made it unreadable. And without that product key, you’re in a pickle! In this article, I’ll show you how to find the Windows product key on your PC and make a copy of it to guard against such disasters.