Malwarebytes is a good start if not go to you tube if you can.They usually have some good removal procedures there and will walk you through.Or http://www.bleepingcomputer.com/virus-removal/remove-security-tool here is a removal guide from bleeping compter.com
good luck Jack
I also have this problem and have tried both suggestions however they will not run as the security tool warning comes up and I think it is blocking it.
Is there anything else I can try or do I have to have McAfee go in and fix it.
Thank you for your help.