Ok, heres the deal. My friend needed a new fan installed so I go to his place, take out the old fan, and read the directions to install the new fan. it mentions that you have to take out the entire motherboard to secure the fan. This was no problem as I am not quite a novice with handling hardware. ( I built my computer from scratch from some basic directions on the internet). I remembered to wear the anti-static strip, the whole nine yards.

Turns out the fan would not work with his motherboard type.

So I put everything back together the right way, applied the bonding material back to the old cpu/heatsink. I turn it on and it started for 2 seconds and turned off. I figure I forgot to plug something in but I've double checked everything and it still won't work.

When I do turn it on the lights on the keyboard flash for a moment and then nothing. No monitor response, nothing.

What I need to know: Did I fry the board somehow? Or did I fry the Processor? Is this fixable?

A little info on the system hardware:

D865G Intel Motherboard
Intel Pentium 4 Processor 3.0GHz 512k 800FSB
300W power supply