I have an early 2009 top spec MBP, and I opened it up to clean it out as I do (warrantly is far gone). Anyway, the video didn't work once I booted it up. I know, it was a stupid thing to do and I regret it! I took it to an authorized Apple repairer and they tried hooking it up to an external display, and they even replaced the display and still nothing. They said it would be $1800 to replace the logic board. When I bought it in 2009 I upgraded to the best components, which was expensive at the time, so I guess that is about right, is it?