My laptop is not detecting my wifi, nor any of my neighbor's networks. I have 2 laptops and the other one will show all the area networks and am able to connect to my wifi on it, but my other one won't let me even see a list nor connect to mine. it keeps going back and forth...every once in a while it will connect to the wifi, but then something happens and I have to hook my laptop up to the router on a hard wire. and then after a while it won't connect on the wire and will show area connections and connect to the wifi again. it has done this twice now over the past 3 months or so. i am using windows 7 professional on a Dell latitude D630 laptop with intel core 2 duo. Please help!