Why there is no photo image on the screen when I turn the power on?

Why there is no photo image on the screen when I turn the power on?

When I turned the power button on, the blue screen says "no image". The camera still takes photos and displays them, but I can't get to view my previously accumulated photos . When I plug the camera to my PC, I can see all previous photos. The battery is good, and my LCD screen is not broken.