Tablet wont reboot at all.

I put my RCA Tablet 7" Android 4.4 KitKat tablet on the charger and it goes to the robot with no command.I have rebooted it a couple of times by pushing the power and volume up&down buttons before and gotten back to the main screen.But this time no luck.It will go to the rca screen then to the robot.I dont think It will charge being on the robot.It will not stay off when i put it on charger.I have done a factory reset with the robot and with the reset button in the back,no luck.Tried the buttons again.What else can i try?