I have a wireless ADSL, D-Link 2640U. I was doing some configuration on it and immediately the control panel disappeared. I am trying to log in it is refusing. I have try to reset, it is not resetting. Network is working, but no internet because I have not yet configured it for the internet. When i use it's cd, it reaches to the point of detecting it and telling me that "The router is off or a cable is not connected" Though it is on and the cable is fine i have tested it in different routers it works well!