If the OP's problem, whatever it was, was caused by using Tuneup Utilities, they can simply use TU's rescue function to undo any changes made by TU. By default it makes backups of everything it changes so it should be easy to restore.
In TuneUp Utilities 2010, under "More Functions" simply click "undo changes."
Otherwise, there's always the good old Windows "system restore" utility (assuming it hasn't been disabled) which can be used to restore to an earlier point in time before the problem occurred.