Sorry but you are going to have to provide more information.
What is your computer doing? Any warnings or pop-ups and what do they say?
What operating system and service pack are you using? What McAfee software do you have installed (name and version please)?
See the last link below for some hints and suggestions.
Toronto ▪ Canada
Volunteer Moderator - Consumer Products
I CAN'T HELP PRIVATELY - PLEASE POST IN THE FORUMS
Use Advanced Search To Find Answers