I took 25 photos and tried to download the...

You didn't mention what kind of camera you're using, so in taking a best-guess here, I would suggest you find where the internal memory in the camera is and see if those images have been placed onto it. One way to check this, again, depending on the camera, would be to take out your memory card/stick and see if you can review images on the camera. Most will default to the built-in memory within the camera if there's no memory card inserted. Again, this is speaking in generalities since I don't know the model/brand of camera. Hope this helps!