Galaxy Tab 10.1 P7510 won't start

[datastar]

My P7510 is acting like it is bricked. It will not start. I tried the power button and volume combination and nothing works. I connect to my Windows 8 PC only see it in Device manager as "Other Device" as a APX without the drivers loaded. I have charged the device for hours on two different chargers.

It had 50% charge when my nephew was playing Angry Bird and he returned it in what I thought was just sleep mode. I tried turning it on 4 hours after I got it back and it would not come on. I figured the battery was dead so I charged it but to no avail.

It is not rooted and has the stock 4.0.4 Android version.
I cannot ask my nephew what he did because he is autistic and would be scared to deaf it he though he broke my tablet.

Any help is appreciated.

 

[srkmagnus]

Let is sit over night on the charger and try again the following day. Aside from trying to power on, can you boot into recovery/download mode? Should be power on+volume up.

 

[datastar]

I did charge overnight and tried recovery mode but nothing happen.

 

[datastar]

I did charge overnight and tried recovery mode but nothing happen.

UPDATE iFixIt by disconnecting the battery waiting ten minutes. I got the battery charging icon, charged awhile and it fired up. I did not lose any data. I got the information on how to fix on XDA [Q] P7500 wont boot only adx detection (bricked?) - Page 2 - xda-developers (Samsung wanted $150 and said I would lose all data.)
I am happy happy happy!