a Friend of mine camera was the same way. She would get an error messege and then the camera would immediately shut down. I took some time to take a look at the camera my self and found out that the Shutter Mechanism inside the camera has broken. If you take of the Lens and look inside the camera as you turn it on the outter shutter would look like something was Bulging out of it and I knew something inside was unhinged or broke. There after I took a paper clip and pryed oped the shutter to see that the inside part of the shutter release was broken some how. that was the Cause of her Particular case of the Error 80 Message.