Malwarebytes

Affected with Virus?Then try this!!

Malwarebytes Anti-Malware Free's industry-leading scanner detects and removes malware like worms, Trojans, rootkits, rogues, spyware, and more. All you have to do is launch Malwarebytes Anti-Malware Free and run a scan. It's that simple. Or if you want even better protection, consider Malwarebytes Anti-Malware Premium and its instant real-time scanner that automatically prevents malware and websites from infecting your PC. Either way you're crushing malware and foiling hackers
It is simple to use which doesnt slow down the pc but the free download doesnt provide all types of protection,But all types of protection is available in Premium software.

You can download the software from below link.
http://www.malwarebytes.org/free/

A sample image is shown below.