Power on fails 95 percent of time, reboot or power on fails

Hp900 elitepad will not boot up or show any sign of power on.

Constant tapping Power on button and Home button sometimes wake it up after 5 minutes of random button pushing.

pressure on power plug or buttons has no effect on turning it on.

Once it is powered on, home, and power sleep, volume buttons work 100 percent.

If powered off or rebooted it wont wake up.

Seems to be internal Logic, software. or power supply, or battery type issue.

Brand new out of box, over night charge and DOA