At first yesterday, none of the computers or the iPad could connect to the wifi. I unplugged and reset the router. The router is on the second floor of the house. The laptops were able to connect after that with no problem, but the two desktops on the floor below had trouble. One could get "local area" access only and kept getting a message that it was "identifying" the network and never got an internet connectin. The other desktop would get the same messages but would intermittently get an internet connection. When I used the iPad or the iPhone on the wifi connection in the same areas as the two desktops I got a full signal with no problem. Anyone have any idea what the problem could be?