Where can I find a security program ';free'; to monitor my system?

System keeps saying'' your computer might be in danger! Security software has expired (whatever they're taking about must have been on the system when I purchase it.) Have no knowledge as to what the heck my system is talking about!!

Where can I find a security program ''free'' to monitor my system?antivirus protection

http://free.grisoft.com/doc/1

This is a great tool and works great. It updates regularly and it is free.

Where can I find a security program ''free'' to monitor my system?computer repair

http://pctonic.blogspot.com/

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Here are program I use that will give you 100% protection. Ofcourse you must also have all your critical updates installed from Microsoft.

I use the free zone alarm firewall for many years. Excellent with free updates and all new versions free. Protects you from rouge incoming packets and keeping your private data from leaving your pc.

http://www.zonealarm.com Download their free home for personal use.

Antivirus program I use. You only pay a one time fee of $29.99. and you get all updates and all new versions for life.

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