I was recording with audacity. I tried to view an open office document and the system froze. Obnoxious noise! So I crashed it with power button. When I started it back up the wifi was gone, not even an option available in network sharing. WTHeck! any Ideas I did a reset but still no internet, so I am currently on a ethernet cable but it is running across the living room I really need t get wifi back. Any help will be greatly appreciated.