Audio ads playing in background

My computer has been attacked by many different kinds of virus these few days, like trojans, FBI malware. I have cleared all of those by using my antivirus software except the audio ads playing in background. I have been following the instructions of the post in this link: http://forums.techguy.org/virus-othe...ackground.html

I disabled all the antivirus software realtime protection and ran the ComboFix already, but I couldn't find the combofix report. Can anyone help me with this? Thanks