Jessica

My computer has suddenly started putting the "Autoplay" box up on my screen with the little flashlight showing. It sometimes pulls up three Autoplay boxes at once with me touching no keys or giving the computer any commands to do anything. I have NO disks in any CD drives and nothing in the UCB ports and only the power cord plugged in. As soon as I click the "cancel" button the computer stops the Autoplay box and lags so badly that I'm unable to do anything. So I'm stuck trying to open anything that I need to do and up pops yet another Autoplay box. The Autoplay does not tell me what it is trying to run or open. I have run mulitple virus scans and they have found nothing. All of this has caused my computer to lag horribly. How can I get my computer to stop running the Autoplay box?