Well, I'm b-a-c-c-k-k-k-. Everything's been running smoothly until today. The blue screens with the "Bad Pool Header" started up again, exactly like before. I did a clean uninstall and reinstalled the Malwarebytes software. We'll see what happens. Sure would be good if the technical support team checked these symptoms. I cannot be the only person experiencing them, I don't think. I'm wondering if this sudden reappearance may have something to do with McAfee updates? There have been two so far today. I'll return if my computer crashes again. Thanks!