Hi Jerry,
After running MCPR did you get a prompt that said INCOMPLETE CLEANUP, if so it means the computer still has registry keys of McAfee. Please follow the below steps;
Restart the computer and start tapping the F8 key ,from the windows advanced boot option select , safe mode with networking.( Ignore this step if you are using wireless connection)
Follow the below document which will help you in running MCPR successfully.
http://service.mcafee.com/faqdocument.aspx?id=TS100299&lang=en_US&prior_tid=2&AnswerID=16777221&turl...
IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, see the following Microsoft Knowledge Base article: http://support.microsoft.com/kb/256986/EN-US/.
Regards,
Dinesh K