It's about time I found someone else having this problem.
I too have the m2n-sli MB.
Tho, it seems I've traced it to either a read-error directly from a dvd.
If I'm accessing data ANY way from a dvd (watching, copying, ripping, etc), if there's a read error, the computer crashes. But not just crashing, the thing reboots like someone pulled the power cord out of the back of the box, and then plugged it back in. There is a moment before it crashes when the box freezes, but that's all the warning I get.
First I noticed the when I was accessing a dvd, sometimes the computer would reboot, as per above description. Couldn't figure out why, I don't have that probelm on my other computer with the dvd in question. It's worth noting that when this happens, the dvd in question is always scratched.
If I burn a movie, I always check the 'verify' box on the burning program. almost always, the burn goes through ok, but sometimes, during the verify process, at any point during verification, it will bounce. When I go back and try to play the unverifiable dvd, I find that the dvd skips some places.
So.....unless someone can draw a different conclusion, I'm going with the thing crashes because of some kind of read error.
From here....What do I do to fix it?
If it makes a difference, the drive in question is a hp1070i (and hp support was less than helpful), and I'm runnig 2K.