Make sure your Apple tablet is at least 50 % charged.
Place iPad in front of you holding it in landscape mode.
Press down Home Button and keep it pressed while gently and slowly rotating tablet to portrait mode.
Release the Home Button and press it again.
If you get no response after a while press Home Button again and bring iPad back to landscape mode.
Release the Home Button and press it again. Keep it pushed for a second, and then gently release.
Wait for a while for response.
Try above steps a few times to get a response while keeping iPad on hard flat surface.
If you are lucky and get response, recalibrate Home button using the above procedure.