Replaced heat sink /fan...now wont POST...what did I break?

I decided to switch heatsink / fan on my Intel Quad q9550 from stock to the Zalman. My Motherboard is Asus Rampage Forumula and was working fine before I started. When I installed the Zalman, MB would not post. All case lights, fans came on, but no beeps and screen stayed blank. Only light I noticed missing on MB was the CPU voltage one which is color coded for normal, high, crazy...it had no light at all. I tried redoing the zalman, checking all connections...still...no POST. So, I then took the Zalman off and replaced with the stock. Nothing. I tried basic troubleshooting like taking all RAM out, put one in at a time...clear BIOS jumper...etc.
So, what is the most likely thing I broke, MB or CPU? Since all lights (except the one) on MB works...HD, GPU, fans click on...I think MB is ok?
Can anyone think of cheapest way I can test? I do not have another 775 MB and do not know anyone that does. Only pc repairs in my area are Geek Squad...dont know if I trust them. Also...anyone have experience with returns with ASUS or Intel? Am I likely to get either replaced? Both are less then two months old. Thanks for advise!

well i was going to say maybe bad timing and corrupt bios or something but them boards have dual bios lol... maybe you hit or unseated something or? that is seriously weird..