I have a 2010 MacBook pro, with OS X Lion on it, that I bought at best buy. Today, I was using it to share internet (via Ethernet) with my xbox 360 so I can play online. I went to use it when it was still plugged in and all to look up something about the video game I was playing. It then completely froze when I was using safari. So I had to force shut it down. When I tried to turn it back on, it won't turn on completely! I see the apple logo and the spinning icon (not the rainbow wheel). It just stays on that gray screen all day and gets really hot after a while. Whats going on? Lately, the mag safe hasn't been working well, it sometimes won't charge and sometimes it will. I'm not sure if that has anything to do with it. Wont mind making my first trip ever to a genius, but want other inputs before I make an appointment.