Camera won't stay turned on

This camera had been working fine until a couple of days ago. All of a sudden, when I turned it on the led screen came up normally and then shut itself off. I have tried replacing the batteries and deleted all photos from the camera thinking maybe that the card was full and that's why it keeps shutting off. Don't know what else to do with it. Help...please?
Vivitar Vivicam Camera turns on briefly (1 second) and then immediately shuts down. Any solutions. Batteries are good so thats not it.