I bought a used iPad off of Ebay. When I first turned it on I got the iTunes plug-in screen and was told it needed a restore. I didn't think anything of it, I was going to wipe it clean to put my wife's backup on it anyway. So I did and it worked fine. However, it wasn't until my wife let the battery die or it was turned off that the problem showed it's ugly face. Currently on this iPad, if I wipe it totally clean by putting it in DFU mode, putting the latest firmware and iOS on it, and it starts up with the "Hello & Hola!" screen...but I turn it off and turn it back on...the iTunes plug-in screen comes back. I thought my backup was corrupt until I set it up totally fresh without ever touching it, just turning it off and then back on. The problem was still there. What's wrong with this thing? I've already contacted the seller to return it possibly but that's a pain. I can go to the Apple Store but if I can't even put this in DFU mode, and Option-Restore it fresh from the RAW firmware without getting this problem, then something else must be going on. Thoughts?? iPad Air 2, 16GB Wifi ONLY.