I dont run any anti virus, I havent for some time now, dont really see the need. I also recent just installed windows and all my programs last week, so I think its very unlikely to be a virus or malware since I know all the programs I have. Also, just a thought; it says it failed to start, doesnt necessarily say when. Just when shutdown happens it displays the message, I dont think it means for sure that it tried to start it right then and it failed, maybe it failed earlier on and only displays the message then. Just a guess.