Don't download so much porn then

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Anyway, you will need to be more specific and such. What operating system do you use? What antivirus do you have? How many Hard drives on your Computer do you have? You might not have any disks if you have a small (about 11gb) second hard drive, in which your OS will be on. Norton sucks ass, both free and paid. For a free one I recommend AVG or Avira, you can find on Download.com. Don't, however, use more than one anti virus software. That does more harm than you might think. If you have spare money and often get viruses, I suggest you invest in kaspersky anti virus. Best one about. You can illegally get it but they tend to block the keys and sometimes leave you a few days without any protection. Using a torrent site for a "cracked" one might just do more harm than good. If you try the anti virus I mentioned and it still doesn't work, quote me back and answer the question and I will try and help you in a factory recovery.