Digital Camera Use

Suddenly my Advent laptop running Vista won't recognise my Canon camera.
After successfully downloading photos to the hard drive for months, now,
when I connect the camera to a USB port, it makes a sound but there is
no window as there usually is to select the required action. Tried a
different USB cable, same result. Other external devices, like flash
disks, USB printers, work fine. Why should this be? The only thing I've
done recently is downloaded a driver for the built in webcam. Would this
cause the problem?


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Jeceris