No network again! This time it happened while I was logged on and writing a note - max of 30 seconds away from the keyboard. Now it won't restore even after a hard reset.
Looks like I need a location for downloading the driver on another computer.
If you're going to post a new thread every time your Surface Marvell-ous Wireless adapter drops, I suggest you post them on the Microsoft support site ... maybe they will take notice and fix it.