I have several retail copies of Windows 7. Normally I make a note of which product key was used to activate which PC. Unfortunately, I slipped up.
I've just reinstalled Windows 7 on a PC, and I'd like to activate it. How do I audit my other PCs to find out which product key I used, so that I know which key to use for the reinstall?
The value in Computer Properties (that looks like 00123-012-1234567-12345) is not the one I'm referring to. This is the "Product ID".
I'm referring to the key that would normally be on the DVD case; the one that looks like AAAA1-B2222B-C3CCC-4DDDD-EEEE5. This, confusingly, is sometimes referred to as the "Product Key".