Camera shuts down randomly

Hi, I have a nikon d7100 and after some time of using it ( no drops or any damage ) I was shooting a video and suddenly the camera shuts down ( like, nothing works anymore ) I tried to switch it off and back on but still no response. No light going on while it's shut down or any text on the little lcd on the top. I tried to take out the battery and the sd card and put them back on but still no response. When i put the battery to charge for couple of seconds the camera works but still shuts down while i'm on live view or recording after couple of minutes. No text of overheating or anything else appears before that. I tried changing the battery and the sd card but still shuts down.