No need to install Antivirus to remove malwares on your system just copy the Antivirus on your Pendrive its makes you easier to run system in safe mode. To remove all types of virus in your system then you've to get Norman Malware Cleaner for best performance and without installing Antivirus software on your system. Just run it from your Pendrive itself, but this Antivirus gives you only instant Security not total security due to External performance.
Without Installation of Antivirus