Well, i've checked the gpu fans with a mirror before turning it to see closly. I didn't saw any cable hitting the fan. Then i turned it and didn't saw anything too. But when i put it back in his normal position the noise stopped until now . Like 1 hour without it and still haven't come yet. Whut ?? Could it be something in the little motors of the fans ?
I don't believe dust can do such this noise, because it only has 2 months the GPU.
Thanks