Picture shows up on shutdown

My compaq nc6220 shows an old picture on the screen when the computer shuts down. This picture used to be my wallpaper but it was deleted years ago. Now when I shut off the computer and after the windows screen disappears that says windows is shutting down, this old deleted picture shows up and stays on the screen until the laptop powers off. How do I delete this already deleted picture that I can’t find anywhere on the computer. GHOST????? Please advise.