I have lost the ability to connect to the internet with my desktop (Dell XPS 420). I have a Netgear WNDA USB adapter but it cannot find any networks. It is not the router because I have a laptop, iphone and tablet that can all connect. At first I could see the network but it was "bumped" by this Virtual Network and then it would not be able to connect. I found online an article describing the same problem so I followed their recommendations. I removed the Netgear software and reinstalled it from the CD but now it will not even bring up the control module to connect/find the networks. What's even stranger is that the computer will not connect with an ethernet cable either. Help!