well i was running bootcamp and needed to switch to the mac so i restarted it. When I restarted it, it got stuck on the apple logo and the spinning wheel. I left it on for about 20 minutes and nothing happened. I noticed a little after I started using bootcamp there would be a little loading bar under the spinning wheel that would show for a minute and the disappear if that is any use of information. I can still get on bootcamp by holding the option key but when i try to go on mac it gets stuck. If someone can help with this problem that would be great! thanks!