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Contribution d'origine par : mayer ,


My first thought on this is that your Nvidia 8600 GPU has failed.  Apple is replacing the logic boards on these machines for free for up to and sometimes beyond four years from the date of purchase.  Your machine should still be covered but I would call Apple now.  You can reach Apple here:

In the USA turn around time is four days.  Apple will FedEx you a box and pay for everything.  There was a class action law suit on this GPU but it has ended now.