Sometimes when I close the type cover and come back not too long later the WiFi and I think Bluetooth too are completely missing.
I can't find their hardware or drivers to disable and re-enable when this happens either.
I have to restart the machine for it to work again and have "network connections" appear in the device manager again. When its working the driver says it's up to date though.
I don't know what the problem is. It seems I may have to go back to the Microsoft store for thenm to figure it out.
I'm really surprised this is happening because my surface RT never has any issues and I would assume that this third gen pro device would be ready to go out of the box.