For sony vaio laptop

Free or paid for ?
What exactly are your requirements as there's many to chose from and what one review says is best another disagrees on.

For a paid AV I like NOD 23 (http://go.eset.com/us/search-brand?CMP=KNC-g-ag&gclid=CMaV_czc8q0CFQ5ihwodBSVAtQ), it runs a bit smaller than most of it's complication and gives excellent protection. For a free AV I use Microsoft Security Essentials (http://windows.microsoft.com/en-US/windows/products/security-essentials).

OMG, MSE sucks. Its got no protection like Comodo Internet Security. That program has 20x the protection of MSE, maybe 100.

I am using Antivirus and Anti-spyware program. And I have no problems with PC security. My pick:
Antivirus: AVG (http://free.avg.com/ww-en/homepage)
Anti-Spyware: SpyHunter (http://www.pcthreat.com/)