I just got a new M3800 for work, and discovered that it is configured with a Windows 8.1 Pro key, that is downgraded to Windows 7 Pro by Dell.
What is the best/easiest way to get 8.1 Pro on this machine?
I can't find a Windows 8.1 license/sticker anywhere, but a Dell USB thumb drive with Windows 8.1 Recovery Media was included.