I searched and tried all of the solutions that I could find to help my situation, but none have prevailed. I have a 2009 2.53ghz 8gb 500gb 7200 macbook pro, running latest version of snow lep 10.6.4. It's been running fine since I got it last august, now today I started it, and I get the bluescreen that seems to refresh itself with a slight flicker every 10 seconds with a new bluescreen with the spiraling activity dots. I tried booting from a disc, and it nothing changed. I tried booting in safe mode, and it the bar would fill up, then it goes right back to bluescreen. I don't have a screwdriver on me, so I can't take the battery out. Anyone have any ideas?