We have a machine that was shutting down every ten minutes or less due to an lsass.exe error. Stinger performed, windows updated, and mcafee updated - problem still persisted. Completely fdisked the machine and restaged the machine. The problem still persists. Tried it another time and still no fix. Does anyone have any suggestions on what the cause of this problem is and what can we do to fix it. We're stumped.