When in standby, camera comes on by itself

When in standby, camera comes on by itself

When camera is not in use, I press the power button to place camera in standby. While laying flat on a table, the camera comes on by itself, extending the lens, preparing to shoot. When picked up, the screen flashes like a strobe showing whatever it sees like individual shots in a movie format. When this is happening, there is no control of the camera or even the power button. I have to remove the battery to regain control.