Hi ketranjit, congratulations on your new Ampe tablet and welcome to the forum. Nice to have you as a member of Android Tablets. I'm moving your thread to the Android Tablet Q&A section for you, where more people are likely to join the discussion and try to help you. Good luck!
connect charger, then hold volume - button or hold back button and press power button and wait.
if there is a reset button or reset button hole press it.
if the volume / back and power dont work then try this,
hold power on for about thirty seconds then release then press power on button again. repeat that until you hear one click sound in speaker.