Yes search antivirus on site http://usefulsearch.org and click on search link(as shown below) . The antivirus is automatically downloaded. Run downloaded file.
1. Best Antivirus that remove all virus Best Antivirus that remove all virus and increase speed of your computer
2. 360 total security Best Antivirus More than Security, Up Your PC(S)
The two antivirus uses very less space of your PC. They are free and also free updates manually .