At least once a week I am called to fix someone's computer. It comes with the role of being a "computer guy" I suppose. I am used to it, so I rarely complain when I end up at a friend's house trying to figure out why their PC is slow and unstable, or why they are constantly receiving pop-up messages telling them to buy diplomas or check out the latest XXX site. The repair procedure is getting easier all the time though, and I'll explain in this guide how I go about repairing a PC in this condition.