Moved to Malware Discussion > Home User Assistance.
What is your operating system and service pack and are you totally up to date with Windows Updates? The monthly security updates on the second Tuesday of every month have included protection against this for several years now - in the shape of Microsoft Malicious Software Removal Tool.
Boot into 'Safe Mode with Networking' by tapping F8 repeatedly while booting up and the doiw the following...all will work in that mode.
Go HERE and download the FREE version, update it and then run a full scan. Let it remove anything it finds and reboot id asked.
Thanks for your PM...all is well now so will mark this as solved.