Hi guys, new here. I am having a problem installing my new Graphics card. My motherboard is a Sabertooth Z77. Previously I had SLI 550Ti worked fine. Then I went and got a GTX 770 from MSI. I saved enough money up to purchase a second one. They both work on the first PCI slot, but i can never get it to recognize the second. Do I just need to upgrade the motherboard? Ive updated bios reset cmos set to gen 2 in Bios but I still go diddly. My PSU is 1200w. 16g ram and i7 2600 sandybridge.