I was having the same issue. What solved it for me was simply plugging it directly to the modem with the ethernet cable. Turning off my computer while plugged in, and once it recognized the internet via ethernet, it got all of the information it needed to reboot my Airport card. While plugged in I tried connecting wirelessly and sure enough, it recognized the wifi and not it works like a charm. Hope this is the same solution for yours. Blessings