Dell Optiplex 745. Reloaded Win XP Pro on 15/9/08 due to virus. Everything had been working just fine until November 5th. when the system blue screened 4 times during the day. Passes all Dell diagnostics. Working just fine at the moment. Don't know what to do right now. Give it back to the user or reload windows again. Wish there was more info on error or if there was some way to find out what happened on November 5th. The event log has the 4 entries for the times it crashed. Event attached as jpeg.