I am having a HP NX9420 laptop. It has a wifi intel adapter. It was working fine, but suddenly it stopped working. I have a wireless setup at my home and it is the only source through which I can surf the web. I did nothing, but there were some new updates which I think are responsible for the problem. I checked in Device Manager where I noticed that the adapter is listed. But it is not working. I tried a number of update for it, but it is not working.