If you know the file format of your photos, go to Start and in the Search Programs and files field type "ext:file format". For example, if the files are using the .jpg format, you will need to type ext:jpg. If you don't know the file format, go to Start and type kind:pics or kind:photos. The search engine will provide you a list with all images from your computer. If you can't locate the downloaded files, you will need to transfer them again on your PC. If you deleted the pictures from your camera, you can try to recover them using a utility from Software Informer database.