Strangely I fixed mine by going to device manager, deleting the problem adapters the rescanning for new hardware. Both the wifi and ethernet adapters were found and working. :sarc:

I'm having the same issue, Dell XPS 502x Upgraded from 8.1 to 10. No network adapters at all. In the Device manager there are warning triangles on network adapters (intel centrino wireless-n 1000)...