Try the following Microsoft free Software, which detect & remove all known viruses from PC.
• Microsoft Security Essentials or, for Windows 8, Windows Defender
• Microsoft Safety Scanner
Microsoft's own Malicious Software Removal Tool. http://www.microsoft.com/security/pc-security/malware-removal.aspx
Take these steps to help prevent infection on you PC http://www.microsoft.com/security/portal/mmpc/shared/prevention.aspx
Note: Install multiple anti-virus software may cause System slow, conflicts leads to system crash, & more problems. Recommended to keep one anti-virus software with up-to-date, scheduled scan & real-time protection enabled.
Recommend : Do a little researching any unknown programs in your favorite search engine prior to installing them. Be cautious of all web browsing and Internet downloads, many unfamiliar websites may infect your computer/ drop adware type malware through drive-by
download technique without your knowledge.
100% protection = 50% of antimalware + 50% of your awareness
D09r