FREE Malware Cleaner

Apart from useful Malwarebytes (http://www.malwarebytes.org/), there is another FREE malware clearner from an antivirus software company called Norman, http://www.norman.com/downloads/malware_cleaner/en-uk

P.S. Microsoft's FREE anti-virus software, http://windows.microsoft.com/en-GB/windows/products/security-essentials

This software also provides FREE mode of anti-malware, http://www.emsisoft.com/en/software/antimalware/

Lavasoft also has free anti-spyware, http://www.lavasoft.com/products/ad_aware_free.php

It is a free way from microsoft to speed up your windows pc, but you may need to adjust it well or you will end up more problems. http://support.microsoft.com/kb/929135