My professor sent the class a pdf that froze all of the mac desktops in the class (all of which recovered) but really screwed up my macbook. When it boots up, it goes to the desktop, loads everything, and then pinwheels. Also, the battery life calculator appears for about the first 30 seconds and then disappears. I tried booting up while holding down the shift key and it does the same thing. Maybe I'm missing a step here. Narrator chimes in after about 3 minutes, but the rest of the computer is useless. It also gets really hot really quickly. Oddly, the widgets keyboard short cut works but I can't manage any of them and I can't exit. Worth noting: there's no pinwheel in widgets. It just stops functioning. This entire time, I have full control over the direction of the mouse, but I just can't select anything. Fun fact: I sent the computer off to Geek Squad and while they were able to turn the narrator on, they couldn't manage to fix the whole pinwheeling thing. They said it was a "software issue" and sent it back to me in the same condition. Any help is appreciated.