Built a new PC for a friend, and all is well when running on integrated graphics, but when trying to hook up to the graphics card it won't work. The LEDs on the card only turn on at boot up, then proceed to turn off. The motherboard I'm using with the card is the GIGABYTE GA-Z170X-Ultra Gaming, and it's UEFI isn't the best, especially since I'm used to ASUS'. I've already tried reinstalling Windows, reseating the card, trying the card in another PCIe slot, and even RMAing the mobo and graphics card. Please help!! Any suggestions are welcome...