Board Thread:Oblivion/@comment-4335890-20130713195131/@comment-4057437-20130715180812

So your platform is PC, are you running any mods? We are using windows 7 Home Premium and our PC games of Skyrim don't work well with some mods, others don't seem to cause any problems. (We aren't playing Oblivion on our PC's yet, just on XBox.)

Unfortunately, some mods buggy effects linger in saves after they are turned off. You may need to start a new play-through and might even have to delete your entire game files and reinstall them if that is the case for you. (We had to do that once, for Skyrim.)