ASRock z77 extreme4 - No Video

I just put together a new computer. It ran for a few days using an older ATI card. When my EVGA GTX 560 ti returned from an RMA, I quickly plugged it into the mobo. After that, no more video. I switched back to the ATI card and I continued to have no video. The computer boots fine and plays the windows start sound. I can type in my password and hear Windows open. I can even run a program that had a shortcut on my desktop solely because I can remember where it was to double-click it. This is terribly frustrating.

I started with the video card installed. I tried taking it out and putting it back. I tried moving it to another slot. I tried multiple cards that I know work. Nothing. I tried just using the onboard graphics. I tried using DVI, VGA, VGA with DVI adapter. I tried all inputs. I tried clearing CMOS using the i/o port button. The power cables are all firmly in place. I do not understand why the new card made the video completely stop working. The computer boots fine in about 5 seconds (love those SSDs) but I can't see anything. Any help is super appreciated.

-ASRock Z77 Extreme4 MB

-i5-3570K 3.4ghz CPU

-EVGA GTX 560 ti GPU

-Vertx 4 OCZ 120gb sdd

-Corsair 850w PSU