Done, it's working, but i dont know if it's the bios or the mobo but when i start a 3d application or even during the windows performance index the pc freeze with no error even in event log. I tested every component in another pc and they work normally so i think that i have a defective mobo. I have rebuild my old pc and i forgot to flash an unmodded bios on the mobo im going to rma. It's essential for the rma to reflash a unmodded bios?