well as no-one has answered your question, I'll try, On mine there's an option to restore the pc to it's original state as in when it left the shop. You pick this option up as it's booting up. You should then get 2 options, 1 will simply remove all your programs that you've put in but your docs will remain. The other is called destructuive and that's the complete restoration back to shop condition but you will loose evreything you have installed and your docs. make absolutely sure you've saved everything to disk or similar before you do this.