www.oople.com/oople.com/downloads/windows-kb890830-v2.13.exe
There ya go fella - Its the Microsoft Malicious software removal tool - You can download it from the Microsoft site if you prefer but that's where I got this one from when I had the problems a few months ago. Once you've run it (think it might need a reboot) you should be able to go get some protection installed. I'd get malwarebytes and avast.