Well since when my video card has been pulled in and out numerous times after figuring out that it was it that it was it that was causing the problem, so I'm pretty sure It has been seated properly.
When the video card is seated... Nothing happens. No POST, no signal to my monitor, nothing. Just a big old error code. But everything works, fans, HDD, LEDs. Everything.
And I use the Asrock Z77 Performance motherboard. http://www.newegg.com/Product/Product.aspx?Item=N82E16813157298
It's basically the same as the Extreme4 but +/- a few features.