Macbook pro 2011 wont boot

Hi,
I need a help regarding issues with my macbook pro. I am getting bluescreen on start up. Here is a link: https://www.youtube.com/watch?v=lzryrh5x-Rs
I did new reinstall of mountain lion but it was working for about 10min, after I did first update, I did restart but it just stopped at grey screen.
I went also to apple shop, they did tests and said that all HW tests are ok and it should be something software related.
What could be causing this issues? Could be logic bord regarding all HW tests?
Interesting thing is that when it is doing recovery it can be powered whole night with no problems.
A also did pram reset but no luck.
Tnx
Miha
Macbook pro, late 2011, 2.2 i7

Run these steps first. I see you reinstalled. Run the other troubleshooting options, particularly in the second article.
If you see a blue screen at startup - Support - Apple
Mac OS X: Gray screen appears during startup - Support - Apple
If it persists, run the Apple hardware test. It could be your logicboard ...specifically thinking your discrete GPU since this has been such a big issue for these models.
Using Apple Hardware Test - Support - Apple
Message was edited by: nbar Completely misread the OP. I see hardware diagnostics checked out. Can you boot into SAFE MODE without trouble?

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