Download & Install the following 3 freewares. It forms a free complete security suite for your system!
1. Avira Anvivir - http://www.free-av.com/en/download/index.html .
Avira has very good internet security, real time updates, great overall protection.
Ok,single AV(Avast or Avire) and Malwarebytes.
Do I required third party firewall like comodo except windows default firewall ?
I don't want to slow my PC.
I have Intel E2180 CPU and 9600GT.....
And I use to play many games including MMORPG.