We need much more info than that. Please try to give us a description of what you were doing at the time that you noticed it stopped working, what happened when it stopped working (did it stop all together, was it intermittent), and just as important what is the hardware specs of said machine. What does it have for wireless hardware in it? There is no such thing as too much information when trying ti diagnose these things. None of us have ever looked at a description/info on a particular problem and said "Hmmm, I really wish this post didnt have so much info!"