I have a vista basic toshiba laptop (the one I am using now) and I have "unknown device" listed as one of my 4 usb hubs in device manager and I can't get rid of it even when I delete that one and the other hubs and do a restart in safe mode. I think the problem first occured what I connected a .99 cent usb cable I bought from the dollar store to my printer. I see that they say update your usb drivers on the internet at different sites but I am waiting for my credit card application to be approved to pay for "Driver Detective" on the internet hoping it will fix my usb issue. I did a system recovery and the "unknown Device" is still listed as one of my usb ports with nothing connected. I also get the message that, one of the devices connected has malfunctioned and windows does not recognize it, popping up when no usb device is connected to my laptop. I am wondering how to update the usb drivers if the port is labeled "unknown device" in device manager and where I can get free ATI usb driver updates to install and see if that solves my problem. I was told by the Geek Squad of Best Buy that I have a problem with the motherboard but I am hoping that is not so because he could not prove it to me. Thank You; Ron in distress.