if you are referring to a usb driveclick start control panel administrative tools computer management device manager scroll down universal serial bus controllers you could see a yellow question / exclamation mark? ! or a red X
you will need to update/reinstall drivers
right click to reinstall drivers
if you can see your usb drive but its not workingports(com&lpt)right click update driver
http://download.cnet.com/usb-2-0-root/3000-18493_4-55793.html
http://download.cnet.com/usb-mass-storage-controller/3000-18493_4-161651.html hope it helps
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