Can you provide into about your operating system and what Photoshop version you are running? Is it just your “open recent” menu that you are having trouble with? Did you save or move the images into another directory on your hard drive? If you open a file from a directory into Photoshop does it then appear in the “open recent” list? Can you open any image file outside of the program with any other application? Are there any screenshots you can share? We need more details to try to help!