I turned on my Edge 530 this morning to sync a new course and the "GARMIN" logo appears, it beeps, then it shuts off, and it repeats the process ad nauseum. There are some threads about this issue from a few years ago, but none of the solutions have worked for me. I've plugged it into my computer (which I rarely do) and the computer won't register the connection because, I think, the Garmin is not fully booting. Anyone know what's going on?