Moved to Malware Discussion > Home User Assistance.
There's an excellent removal guide here: http://www.bleepingcomputer.com/virus-removal/remove-ms-removal-tool (Scroll down the page - don't click the first links you see as they are advertising which helps pay for their website)
Try booting to Safe Mode with Networking by tapping F8 repeatedly while booting up, it's second on the ensuing menu usually.
Call up Malwarebytes, update it, and run it. It works fine in that mode. Let it remove anything it finds.
Afterwards if you think it might be still around follow the instructions in that link.
When clean make sure you install SP1 if not already done, help here: https://community.mcafee.com/docs/DOC-2205