vitalis1977

I have seagate 500 gig external usb hard drive which i have been using on my Toshiba equium A200-15l laptop running windows vista home premium. I have used these two for about a year now without any problems and suddenly when i powered on my hard drive i got the following error message "USB Device Not Recognized One of the USB devices attached to this computer has mulfunctioned and windows does not recognize it" In computer management the devise is showing as an Unknown device. Help please