I am using Toshiba Satellite A505-S6025 from a while now. But recently I came up with this error message when I connected my 1 TB external hard drive to it. "USB Device Not Recognized, One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it..." is the message displayed. I am unable to understand what must have gone wrong with the USB port. Does anyone know, what could be the reason behind this? Please help me. I really want to use the external hard drive as it has got all my important data.