So after rebooting out of windows this morning, I went to take a shower, and came back to find my imac was frozen on the screen saver. Nothing I tried would wake it up, so I restarted the machine. After doing this, i was greeted with the typical apple logo and little scrolling circle, and so it stayed like that. Restarted the imac again, same thing, I even let it sit there for 10-15 min to see if it would boot. I'm able to boot into windows 7 perfectly fine, its just osx that is having the issue. Help?