Hi Cassandra... I have Windows XP running on my computer. I recently had an issue with my Microsoft Security Essentials becoming disabled when I downloaded and used CCleaner. In the process, I had to un-install my MSE. I used this to uninstall the last hidden bits: http://download.cnet.com/Revo-Uninstaller/3000-2096_4-10687648.html Are you getting an error code?