When coming into work today I dropped my tablet that was inside a hard shell case. It only dropped about a foot, and I hoped everything would be alright. When I got to work and it fired up I thought everything was golden until I tried to unlock it, and the touch screen would not work. After checking out the tab I found that one corner of back had popped loose. I clicked everything back together, and prayed as I fired it back up. Thankfully it was working again! So just an FYI, if this happens to someone else, this is what fixed mine.