Here are some steps to help detect and prevent viruses and malware on your computer:

1. Install and update antivirus and anti-spyware software

2. Maintain a firewall, with your router if possible

3. Keep your operating system and other software programs up-to-date

4. Be cautious about the emails and attachments you open

5. Use a pop-up blocker

6. Never give out sensitive information like passwords or login credentials

7. Only download and install software, games and media from safe, reputable sources