I have a Lenovo ThinkCentre machine I'm trying to refurbish for a friend. I'd like to install the version of Windows it came with, but the Microsoft OEM key sticker is missing one letter near the very end (00000-X0000). I'd like to just plug away and try the 24 possible characters, but that Microsoft PID checker didn't work using Windows 7 Embedded or the Windows 7 / Server 2008 drop down.
I ran Magic Jelly Bean and got a CD key that was very different than the one on the machine's side. I think it was a corporate key (this machine belonged to a company before). I'd rather not use that as it's probably a pro/enterprise key. What's the best way to validate/recover the Windows 7 key?