thanks for your concern, ken. I'll try to fill in a little bit.
also, I was on the process of installing all the built in hardware of my motherboard.
just so that you don't bother checking my profile to see which one it is, I'll tell you right now:
Asus A7N8X-X, wich has a nForce2 chipset.
I think (but I'm not definitively sure) that the audio device is causing all the trouble.
what are your thought on this?