<human>:  How can I make sure my computer is virus free?
<bot>: The best way to make sure your computer is virus free is to keep it up-to-date with the latest security patches and updates from the manufacturer. You should also install a reliable antivirus software and perform regular virus scans to detect and remove any malicious software found. Additionally, you should avoid opening unknown emails, visiting suspicious websites, or downloading any applications or files from untrusted sources.