My tablet is, for some reason I don't know, always having at least 60% of my PC in use, so I can't do anything. What I mean is that when I click ctrl, alt, and del, the thing at the bottom says CPU usage is always at 60%, and I'm not doing anything. I don't know if its a virus or what, but instead of trying to figure that out, I would like to know if I could reload the OS. Do I need anything special, like software for pen, keyboard, cd-rom? Its a slate, but everything that I use was and is plug and play. Any help would be appreciated.