iPad turns on to apple logo then goes blank

So I have a customers iPad who dropped their iPad and now whenever you plug it in or try to turn it on, it goes to the apple logo for a quick second then shuts off the screen. But the iPad doesn’t turn off because the computer picks it up. I can’t update it through iTunes cause I keep getting error (78).

The customer needs to data off of this thats why I haven’t restored it. I opened it up and saw that the battery connector on the battery was ripped so I replaced it but no dice.

So to reiterate. I plug in the iPad, it turns on to the apple logo but then goes black. iTunes picks it up, I click update and the apple logo comes up with the bar underneath it but then just freezes there. And then iTunes gives me an error.

Any ideas?

Any ideas? I tried replacing the battery, and the LCD but still no dice.