I am facing a very strange problem. So thatís why I have decided to share this with you all. Well what has happened that my taskbar always shows a new hardware found. After that it shows that a unknown usb device is connected to the system and after sometime it disappears. I went to the device manager and I saw a unknown device attached to the usb controller and after sometime i saw that it disappeared. It again came after some time and again disappeared. I think it must be related to the registry but I canít delete any particular registry. I just upgraded my operating system from windows xp to windows vista. If you have any solutions for this particular problem then do let me know as I am in the need of the solution for this particular problem.