A few days ago, my music was messing up and only playing one song over and over. Then my phone crashed when I tried to pick a different song. When I started it back up, it said there was something wrong with my sd card and that I needed to reformat it and restart my phone. After that, my phone simply did not recognize my sd card at all (16 gig). It won't even recognize that its plugged into my computer (although my computer recognizes it). Any suggestions?