Originally posted by: mechBgon
What do you have for antivirus protection (brand and exact version)?
Originally posted by: mechBgon
Try this for a second opinion on the possibility of a virus, and you might try the latest version of Microsoft AntiSpyware Beta too.
Also, you might check the system's Event Viewer logs to see if anything weird is showing up in there. Control Panel > Performance & Maintenance > Administrative Tools > Event Viewer.