|A radio talk show randomly turns on when I am surfing the web or checking my email.|
Sometimes they are ads on certain websites, yahoo had one awhile back that shouted 'HELLO' when you weren't expecting it...scared the crap right out of me. I Immediately did a live chat with yahoo tech support and they removed that ad.
It may be an unwanted rootkit.
You can try
2- Trojan remover
3- Hitman Pro
Remove all they find and see if that recifies your problem
Some HELP in posting on Computing.net plus free progs and instructions Cheers