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You could start by clicking on the START button, then Right click on my computer, select properties then select the hardware tab, click on the device manager button and check to see whether the USB devices are listed or not and whether drivers are loaded. It may be that for some reason the service has stopped or the driver has accidentally been moved/corrupted. I've also seen occasions where a device is unplugged without using "safely remove hardware" from the systray and nothing will show on the USB port. One particular Cannon camera has a habit of tying up the USB ports on one of our machines at work.
Last edited by acropolite; 14-01-2009 at 08:34 AM.
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