I know, it is almost a year since Your post, but, maybe, this could be useful for others.I've had the similar problem with "System Management BIOS Driver", but believe me there is nothing wrong with this driver. I can not explain the reason (I'm not an IT specialist) why this problem occur, but, in my case, there was a problem with RAM. There was different frequency RAM sticks installed on my D945PSN and after I took slowest ones out the problem was resolved. So it was so simple, although, I spent a year working on this.
I forgot to tell that this poltergeist hapen`s just with latest bios update - SN94510J.86A (Version 108).