Ok, so placing the unattend.exe at the root of c:
Here is what is happening now. I get to the windows login.
(automatic login does not work, my admin user account mpcore does not login on it's own, but can be manually logged in)
After manual login
Shows the Windows background (hangs indefinitely, will not load anything else automatically beyond this point)
Two notable processes in Task Manager are:
Setupugc.exe
audit.exe
As I said, it simply hangs there and does not proceed any further.