Malicious Software Removal Tool:http://www.microsoft.com/en-us/download/malicious-software-removal-tool-details.aspx
How to resolve BackgroundContainer.dll error on startup? Click here
Microsoft Safety Scanner: http://www.microsoft.com/security/scanner/en-us/default.aspx
Anti-Malware: http://www.filehippo.com/download_malwarebytes_anti_malware/
C-Cleaner: http://www.filehippo.com/download_ccleaner/