My computer is as slow as anything and has tons of ad-ware and prolly trojans anf virus and what not. My computer has windows XP Home on it and was an OEM (it came with windows on it) is their a way to refomat the hard drive so where I was just left with a new clean hard drive and just winows on there and jsut go through the original setup process when I bought my computer? A link would be great.