Hi to all! Newbie here. A friend of mine is runnign XP on a PC. Last week he went around clicking on used car sites and ended up with a problem... NT Authority is shutting down the system in 60 seconds.... From what i read here on the forum, this was a big issue back in 2003 & 2004. It seems that it was a hit-or-miss as to who was able to get rid of it and who could not. Well, it seems to be back. He was getting the shutdown every 15 minutes. It also successfully turned Avira AV OFF and deleted the registration so it could not update. i did the following (got all this from posts on this forum from 2003: Disconected from Internet Went into Admin Tools and set Services - Recovery - 'Take No Action' on all Turned System Restore OFF Emptied Recycle Bin Emptied PreFetch folder Checked Processes for Blaster (or variations) - None Found Checked Registry for Windows AutoUpdate entries in MS\Current Version]Run - None Found Attempted to load MS Patch (from 2003). System rejected install based on a newer version already present Ran Avira System Scan - Removed 8 Trojans Ran AdAware - current Version---Clean Restarted Computer Turned System Restore ON Connected to Internet Updated Windows - No updates required Updated Avira A/V Pop-Up for NT Authority came on. Executed START - RUN - "shutdown -a" to stop shutdown Ran Avira full system scan - Clean Ran AdAware - Clean The only thing I did not do is turn the Recovery settings back to normal. Just forgot. Can anyone shed any light on what I might try next? Has anyone encountered this issue again? I don't know what else to do.