My brother has a Nabi 2, and it was running fine for a while, but now everything's gone weird. It woun't boot up, and the screen only stays black, with nothing else on it. So first, we found that the Nabi was indicating that we needed a new charger, so he bought one. But it's been charging for a really long time, and there is still a black screen when you try to turn it on. I had rooted it, and I haven't messed with anything since. It has been stable for a couple months before this happened. If you go to turn it on while it's plugged in, the charging LED will change to green for a second, then switch back to red. The weird part is, this only happens if you hold down the power for 10 seconds or so, as if you are turning it off. I realize this isn't a common tablet, but I'm hoping there's something that anyone knows that will help my little brother.