I did the "Free Upgrade" that has now cost me 2 hours of grief.
The was taken from the battery compartment of the Latitude e6430.
The key is accepted for 20 seconds and then fails with Code: 0xc004f014
That's a Volume License Activation Error code:
Did you upgrade from a Windows 7 professional Volume License?
Download a Windows 10 TH2 .iso and attempt clean installation with your Windows 7 Professional OEM key:
Windows Reinstallation Guide and Related Wikies See here for other wikies such as Customising and Using Windows 8.1, Dell Wireless Cards and Unofficial Drivers.