|Go into the Tuneup Utilitie's Rescue Centre and undo all the changes it made.|
If this doesn't work, use Windows System Restore to revert back to a date prior to you installing/running TU.
Most, if not all of these so-called 'tune-up' tools are a waste of time and money, and cause more trouble than they're worth.
You have to be very careful/selective in what you allow them to do.
There are free tools available (eg, CCleaner) which are better and safer; + a little bit of PC housekeeping. It's all you need.
Pop back to let us know how you get on, or if you still have problems.
message edited by Peet100