This problem was usually caused by the damage of the electronic components in the MP4. The malfunction of the buttons and the automatic shut down could indicate that there was a fault in the circuit in the MP4. In order to solve this problem, you can try connecting the MP4 to the computer and use the computer repair software to check the circuit in the MP4. You can also try to connect the MP4 to the after-sales service center to let professional maintenance personnel check and repair the MP4. If the MP4 is no longer usable, it is recommended to discard it to avoid wasting money and time.