Mac Book Pro Start Up

Ok i've been looking everywhere and cant find anything that works.
My 15" Mac Book Pro Wont start up right not sure whats happening.
My Mac:
2009 15" Macbook Pro
3.06Ghz intel core
two Nvidia graphics cards
500GB@7200 HDD
4GB Ram
so here goes the problem. Today when i got home went to start my mac up. it seems to start fine, click on the power button it makes that normal mac Start up sound, and i can also here the drive and all the hardware starting up. Then the white screen with the Apple logo Appears and seems to be going normal. but then instead of going blue like i normaly see. it goes black and everything shuts off. ive tryed a bunch of start up options and diffrent things tryed to go into safe mode and what not and nothing works.
Anyone can help me please say.

Try resetting your SMC and PRAM.
Resetting the System Management Controller >>
If that does not work, boot from your install DVD and reinstall your system.
If the unit shuts off when booted from the DVD, then you have a hardware issue that will need to be serviced.
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http://support.apple.com/kb/HT3964
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!http://i46.tinypic.com/2nvn6f.gif!
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!http://i50.tinypic.com/izvwo1.gif!

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Hey Antonioaok,
Welcome to the Apple Support Communities. If you are getting the white screen when you start up, there are a few steps that can be done. The first one would be resetting your NVRAM
About NVRAM and PRAM
http://support.apple.com/kb/HT1379
Resetting NVRAM / PRAM
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
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http://support.apple.com/kb/PH6455
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Shut down your computer and wait 10 seconds.
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Mac OS X 10.6: Reinstalling Mac OS X
http://support.apple.com/kb/PH6606
Regards,
-Norm G.

Mac Book Pro Start Up

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