Whenever I have to clean up an infection, I have a pretty simple, yet very effective routine.
1. Boot into safe mode with networking (F8 on startup). Download, install, and update malwarebytes. Then do a full system scan.
2. Download, install, and run Combofix.
3. Download ccleaner. Use the registry tool to scan, and fix all the issues. You may need to run this several times to resolve all the issues.http://www.piriform.com/ccleaner
4. Install a quality anti-virus software, such as:
or Microsoft Security Essentialshttp://www.microsoft.com/security_essentials/