Asus P5Q Pro not posting--please help!

So, just to clarify, this computer WAS working up until now--I don't think anything is "broken", per se, I just think configured incorrectly.


Here's the issue: in honor of Spring Cleaning, I took some parts out of my computer (video card, audio card, hard drives, heatsink and re-did thermal paste, etc.) dusted them, and placed them all back in the case.

I had some complications getting the rig to boot back up (had some things unplugged and such), but eventually got the computer to boot. So, I went into my BIOS to change the boot priority to my SATA disc drive so I can do a reformat of Windows, and this is where it all went down.


I tried to change the boot order, but my BIOS froze (I've never heard of a BIOS freezing; this was bizarre to me), so I held the power button on the front of my computer until it shut off. I turned the computer back on, and lo & behold, nothing from my displays: the fans turned on, the LEDs turned on, but I saw nothing on my displays and neither my keyboard nor mouse appear to be on.


I Googled around and saw that I should reset the CMOS. I do this--first tried just removing the battery for 10 minutes, then did the little jumper trick--but that solved nothing; I really hit a brick wall and have no idea what to do now; could someone shed some light on the situation?


If you need anymore specs, just ask...thanks to anyone who tries to help!