Asking for driver - Toshiba HDDR320E04XW 320 GB USB Hard Drive

click start control panel administrive tools ,computer management ,device manager look through all of your devices if you see a yellow question mark?or exclamation mark ! or red x
right click to reinstall drivers or
if you can see your usb but its not working
ports(com&lpt)right click update driver

if your computer came with a motherboard disk the drivers could be on it

or you could download them

http://download.cnet.com/usb2-0-driver-zip/3000-18493_4-163914.html Intel PCI to USB Enhanced Host Controller NEC PCI to USB Enhanced Host Controller B0 NEC PCI to USB Enhanced Host Controller B1 USB 2.0 Root Hub Generic USB Hub VIA PCI to USB Enhanced Host Controller

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 USB Mass Storage Controller
if these packages are not the right
http://download.cnet.com/2000-20_4.html
on the home page you should see a search tab just type in what you are looking for
(be precise)don't use numbers and / - you might have to try a few times to get it right
also the download software finder under that there will be a list place a tick in the box of any one you want/need
all software windows software mac software mobile and web apps

http://majorgeeks.com/downloads35.html

also this link will provide you with many freeware and share drivers

hope this helps you