Split from this thread.
I have the exact same issue, only I am using the Surface 1 Pro. Also don't have a wifi connection. Also have a Marvall AVASTAR Wireless composite device, that shows up as "working correctly" in the device manager. When I go to the Network settings it shows a message in the airplain mode menu telling me there isn't a wireless device detected on the PC.
I actually have the Dutch version of the installation so it shows up as "Er zijn geen draadloze apparaten op deze pc gevonden." but hey that is a rough translation of what you had.
I would LOVE to get Windows 10 working on my Surface because I will need it for work tomorrow, Microsoft (or anyone) please assist!