Olympus C-120 Digital camera?

I have had my Camera for about ten years and taken hundreds of photos with no problems, but now i am unable to take a photo in sunny conditions. The photo turns out almost all white with a very faint almost negative background, yet it works ok in a dark room with the flash on or in poor light with the flash off. Iv'e mostly used my camera in auto mode but changing the settings does not help. Does anyone know if there is a fault with the camera or am i missing something.