Make sure that the camera is turned-on and in the "playback" mode.
Playback is the same mode as when you are using the camera to view previously captured images.
I suggest you buy a card reader for your computer.
Then you are not dependent upon someones software.
When you put the memory card into the card reader, your computer will see it as being a disk drive. Use drag and drop to retrieve your image files.
Computer Windows XP won't "see" camera it worked fine last week,Same connector cable. Hasn't been touched.