A loose connection or a faulty power outlet can cause the device to turn on and off. So ensure your dash cam is receiving a constant power supply. You can plug in your dash cam using a USB cable to check if takes charge normally.
2. Extreme temperature changes can cause the dash cam to turn off. So make sure that your dash cam is not exposed to direct sunlight or extreme cold.
3. If none of the above steps work, please contact customer service to claim warranty for your dash cam.