Hi. I installed a GTX970Asus Strix into my computer this weekend and it does not work. I have a Corsair 850 PSU on a P9x79 deluxe MoBO with i7 3930k and 16gb Ram. I believe that I have the necessary wattage. I have a PCIe 6+2 alimentation cable, it slots in, I get 1 white LED lit up (do I...