We may need some more information on your issue.
1. Has it ever booted before?
2. Where does the boot process stop?
3. Does safe mode work?
4. Are you using boot magic or similiar program?
I have more but answer those first and we can go further.
I am not here to debate with you self proclaimed \"experts\" or technology \"weekend warriors\" your opinion doesn\'t mean much and holds no value.
I am here to give help to those who politely ask for it. I can appreciate your do it yourself mentality and your quest for knowledge.