I charged my tablet and played my computer for the time being, when I unplugged it the left corner side crack. Before it charged, it was perfectly fine. When I opened my tablet the images was kind of shifty. My dad said I broke it, but I didn't. I never dropped it nor did I sat on it, and I was about 5 feet away from the tablet the whole time. I can't feel the cracks, but when I turn it off the cracks can be seen by being reflected by the light. Please help me.