I have a Samsung Note 4 by AT&T that I stopped using years ago. It was in storage with the battery pulled out. The other day, I tried to see if it still works. I put the battery back in and charged it for awhile. The phone powered on okay, I was able to scroll around the menus for a couple minutes. I tapped onto the photo album app, then the phone mysteriously did a restart on its own. But the phone now keeps flashing the "Samsung Note 4" screen constantly every several seconds, goes dark, and flashes the same screen again and is totally stuck on this loop. The phone literally kept doing this overnight until the battery drained. I tried removing the battery and reinstalling but this doesn't work. Any ideas how to resolve this?