This is my first post to these forums so be gentle with me

I have had my computer for almost 2 years and have always just plugged my digital camera into the USB port to download my photos. This has never been a problem until recently. When I now plug the camera in, Windows displays the connection dialog and says it is retrieving image information. It does this for about a minute when it times out and says that it could not connect with the camera.
Any ideas about this?

Charlotte