ya know I had a similar problem, but it was with a computer I had just built. I was a dumbass and set my memory too high, I forget what its called. 0_o guess I'm a little too high to be explaining this right now. uhmm...just try setting your memory to 133 or 166 or whatever you're memory runs at...if that doesn't fix it mess around with your FSB uhmmm....yeah if that doesn't work get a new mobo. Can't help you with p4 mobos though as I avoid p4 like the plague. Sorry if I don't make any sense.
-Ugly
