My Ipad will not start up - after powering it on, the Apple logo appears, followed by the start up wheel, which spins for 10-20 seconds, then freezes. After a while, the Apple appears again  then the start up wheel, etc.  Eventually the battery dies.  I have tried powering off and on several times (pressing the power button and the home button), but nothing changes.
				
			 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		