Here's my parts list: http://pcpartpicker.com/p/CvYc
And a video of what happens when I try to boot: http://www.youtube.com/watch?v=cDTRvRfU4Wg
After reading around and talking to some tech-savvy friends, as well as reading reviews for my old PSU(Rosewill HIVE-650, explanation incoming), I was almost entirely sure that the PSU was the problem. RMA'd and replaced with my SeaSonic SS650-AM, and now I have the same problem.
I've almost entirely deconstructed the computer trying to ficure out what the problem is, to the point that I had nothing but the motherboard with CPU connected to the PSU; graphics card was removed, HDD and optical drive disconnected, case pins(power/reset switch, HDD LED, and power LED) disconnected. Shorted the power pins on the motherboard with a screwdriver, and it went about 6 or 7 seconds before restarting, in stead of just 1 to 2. Added a stick of ram, and that 6-7 dropped back to 1-2. I tried all combinations of my 2 sticks of ram in the 2 ram slots, all with the same result.
Based upon the above, I can only conclude that the problem exists with the motherboard, CPU, or ram, though I have no idea which and I don't really even know if it really is one of them. Any and all input would be greatly appreciated.
Further possibly-pertinent information: My case does not have a built in system speaker, and I don't have one anywhere around here, so all my troubleshooting has been nothing more that shots in the dark without the beeps.
(Also copy-pasted all this from a thread I just put on Tom's Hardware and didn't want to read through and edit the whole thing so some things may not look right. Who knows.)