I have an XP Pro with SP3. I was using the computer with no problems when I noticed the automatic update shield in the task bar. I clicked on it and it vanished only to reappear a few minutes later. This process repeated several times without actually installing anything so I rebooted my computer just to see if it would stop. Ever since then I keep getting this error: "This shutdown was initiated by NT Authority System. The system process C:\WINDOWS\SYSTEM32\LSASS.EXE terminated unexpectedly with status code 073741795. The system will shut down and restart in 60 seconds" I've ran the a full scan with Microsoft Security Essentials and Malewarebytes Anti-Malware. I've also ran the Symantec removal tool for the MSBlast and Sasser virus and both scans came back clean, no signs of their respective viruses. I've ran the Microsoft Malicious Software tool and it came back clean as well. I'm at my wits end on what to do and I was hoping someone here might be able to provide a fix for me. My HJT Log was run in safe mode with networking while logged in as an admin, as this is the only way I can log in. If I log in normally, the error message pops up before any icons or even the start button appear on the desktop.