What is a good, safe and free virus scanner i can use?

I think my computer may have a virus but for some reason the antivirus program i used to have has been deleted. does anyone know a good and safe one i can download?

What is a good, safe and free virus scanner i can use?free anti virus

avast!

What is a good, safe and free virus scanner i can use?internet security software

AVG free edition is pretty good for anti virus and get ZoneAlarm firewall (free edition) on the side; I've had this combination for a long time and nothing gets in my computer, nothing gets out of my computer. www.download.com
Try AVG free edition @ http://free.grisoft.com there is bad parts about it though it only scans viruses no spyware,adware,and fissures.

i do have a free windows live care and it scans everything free

go to http://onecare.live.com/site/en-US/defau...

Then click protection(on the left side of the page). Then click protection scan.P.S. it takes a while for windows live care to scan but it scans for everything not just viruses.
I have found that Avast is one of the best on the free market today.
Active Virus Shield is free anti-virus for your PC that combines traditional antivirus programs, stopping them before they can infect your computer.