if someone can tell me how to restore to factory defaults WITHOUT a disc or program please tell me, it's for windows xp pro edition and i know u have to press one of the "f" buttons with or maybe without "ctrl"+"alt" at the splash screen because i've done it before but stupidly i forgot how :S and currently i can't even get onto windows because of some data reading error or somthing so im using my families computer to post this, i've looked all over google for it and searched on here but i can't find it, please help