If antivirus software is not installed, HP recommends that you install antivirus software. New viruses are created and released often, and without antivirus software, the files and folders on the computer are at risk.
Computers with Windows 7 and Windows Vista come with Windows Defender. Most HP and Compaq computers come with free trial versions of antivirus software. These trial versions are usually limited versions that can be kept up-to-date for a specific period. After the period expires, your computer becomes more vulnerable to new viruses and security threats. Upgrade or refresh the subscription to keep virus definitions current and continue protecting your computer.
For example, Norton Internet Security provides some HP and Compaq computers with a free 60-day subscription to its virus protection service. You can download the latest virus information lists, called definitions, from Live update for 60 days. After that time, you can buy a subscription renewal from Symantec to safeguard the computer against the latest threats.
If you have antivirus software installed, but want to install different antivirus software, make sure to remove the old antivirus software before installing new software. Doing so might prevent software conflict problems.
To download the Symantec software, go to: