After the display driver had a problem, I kept getting grey vertical and horizontal lines or just vertical lines and after over three times that happened, my pc won't display anymore. The fans go crazy, when I turn on the pc, the hdd led light is on for 4 seconds then turns off. The ram sticks makes the gpu fans spin but when I take the ram sticks off, the gpu fans don't spin and the hdd led blinks every 3 seconds. What is wrong?