You Reply: Had the same issue with the DFR0418 board i had ordered.
I downloaded a copy of ProduKey and ran it.
There is a line called Windows(Bios OEM Key) copied the product key from that line.
Went into windows activation selected change product key and then followed the prompts.
When I got to the screen that asked for the key i pasted the new one in and it Activated windows at that point.
Thanks
Glenn