Thanks for your attention; I've got spirals for eyes trying to figure this out. My HP dc5750 small factor was quite reliable until April of this year, when it suddenly began to crash daily (give or take a few hours). The BSOD message was almost never the same, so I thought I'd treat it as a hardware problem. I swapped RAM, ran with just one or the other -- no appreciable difference. I've also tried deleting, defragging, and rebuilding the page file. No difference. I've updated the drivers and bios. Sigh. I'm attaching my (abbreviated) EVEREST report and I'm also attaching the last four minidumps. Thanks again!