Hey, just got a new 1000W PSU and case for my build and put everything together. I have a GTX 680 from my previous build that has been working well since I bought it. However, when I went to turn on the computer for its first boot I didn't get a signal to my monitor. The fans and everything are turning on fine, as well as the lighting and everything else in the case, but I still am not getting a signal. Any suggestions?