1.How can I completely clean my computer out? Like wipe out everything except the software that initially came with it. Isn't there a disc I can use or one I can buy. 2.And my Control Alt Delete function won't worked. It worked a few days ago. Since then, i downloaded Mozilla and LIme wire. It stopped once I downloaded limewire. And I just uninstalled it and Control Alt Delete still won't work. Any ideas??