I'm having a problem where my drone won't hover. When I hit the launch button and it'll shoot straight up until making contact with the ceiling. It'll bounce off the ceiling a couple times, register an emergency and crash to the floor. I've only been using it inside. I then connected to it with the SDK on Linux and could look at the telemetry. It was registering the altitude delta, but not the actual altitude. Do I need a new navigation board?

Thanks,
Ken