Hello everyone. I have a huge problem with my 2009 2.66Ghz MacBook Pro. I discovered that the Nvidia Geforce 9600GT graphic card is faulty and the replacement for the logic board is very expensive (and my warranty ended). However, I was still able to use it with my slower graphic card. Then, somehow my laptop developed more problems: the laptop almost always freezes on startup on the apple logo. I was able to fix this problem by reinstalling Snow Leopard from my disk. But, the computer started to freeze on startup again after few uses. Using disk utility and onyx helps the problem but the problem comes back again. I notice that most of the time I verify the disk in disk utility it always displays this problem: Repairing the disk only temporarily fixes the problem and the computer freezes again and displays the same error message after few uses. Repairing or getting another laptop is very expensive. I was wondering how to solve the startup freezing problem and the error above. I'm also wondering how to keep my Macbook Pro alive as long as possible. Thanks in advance!