Why is my asus tablet not turning on

The only suggestion I can think of is to plug the charger into the tablet and outlet, then push and hold the start button on the top left of the tablet until the little light next to the camera comes on.  (Do that part even if the power light on the top of the tablet is blinking, indicating that the battery is fully charged.)  I’ve had it take up to 15 or so seconds for it to respond, especially if it has been a while since you opened the tablet.  Hope this helps.