Windows doesn't need drivers to detect plug and play hardware. That means if when you plug it in, you can't see any change in Device Manager for the cam to show it's connected (e.g. as any type of new device that shows up in DevMgr - whether as USB, Image or Other device) then is most likely
> The cam is turned off (if it is has a power button)
> The USB cable is bad or
> The cam itself has failed
Try it on another computer, if any sign of detection in Device Manager. If no, driver isn't the issue. It's one of the above