When I turn on the skreen comes on but the car era do not work

When I turn it on the skreen come on but nothing else happens some times when I turn it of nothing happens I then got to disconnect the battery I turned the camera and cleared all the photos to start again with a clean camera I turned off for ar least 1 hour on turning back on I got a sign saying sweet cleaning that went on to a blank seen I then prest the button to take a photo and the skreen showed a patern like it was ready to take a photo but nothing happened I then turned it of but that did not work that's when I released the battery