If you run windows update it automatically downloads the most recent drivers for you, not sure if it downloads downloads new drivers though. I would try windows update first (go to windowsupdate.com with internet explorer). Also, maybe open device manager (right click My Computer, click Properties, Hardware, Device Manager) and go to the section that says Universal Serial Bus Controllers and tell me what you see. I believe that there should be a red mark over the symbol next to "Universal Serial Bus Controllers", and if not, a red mark over symbols in the plus sign drop down menu. Right? If this is the case then you're missing a driver. In that case if you tell me your computer manufacturer and model number I might be able to find it.