Maximum PC

I hate this to be my first post on this forum, but recent events prevented me from doing a better job.

Today I got my Asus Xonar DG audiocard, and installed it onto my current system:

Intel Corei5 2500k
Asus P8Z77-V (Thanks, Gordon!)
16 GB (4x 4GB) Patriot Sector 5 DDR3 1600Mhz @ 1.65v (XMP)
OCZ Vertex 3 120GB (boot)
Hitachi 2TB (storage)
EVGA GTX 460 SE SuperClocked
Thermaltake Toughpower 775W
CM 912 HAF

Before installing, Asus told me to disable my onboard audio to prevent any overlapping on the audio. I did so in the Asus UEFI. I installed the audiocard, and after plugging everything back in properly and securely, the computer would not boot. I tried taking the soundcard out, still no response. I even unplugged everything but the PSU, RAM, CPU, CPU fan, and case headers, and still no luck. The only problem that I haven't ruled out is a bad switch, but I can't test thanks to the Asus board not having surface mount buttons. Tomorrow I'm heading out to buy a switch and/or a case in case I'm right. Any suggestions before I buy a new case (not that I'll mind....)?