iPhone not connecting to my computer
I connected my iPhone to my pc and it doesn't connect. It starts vibrating constantly and on the iPhone the screen keeps going from charging to normal. If I open up iTunes it says, "iTunes could not connect to this iPhone. An unkown error occurred (0xE8000084)." I have tried reinstalling iTunes many times but it only works the first time I plug it in. So after I take the wire out and try to connect it again the same error occurs. So please help me.
iPhone 4S, iOS 5.1.1, Using a Windows 7 PC