If this message is telling u to install "Personal Antivirus" or something like that Do NOT DO IT b/c its a virus. It will create fake alerts that "trojan blah blah blah" has been detected and crap like that, and will not stop. Sunday i had to help a friend get rid of this same problem. Download a program called "Malwarebytes" run the full system scan and it will remove Personal Antivurs. When i researched it, alot of people have been getting this lately