Well, your power supply fan is making some nasty noise. Do you ignore it? Buy a new power supply? Or just replace the fan? If your PSU is working fine, you can just replace the fan. I've seen fans go bad after a week. I also have some fans that have been working for 5+ years without a hitch. In this illustrated guide, I'll show you how to replace your PSU fan, and get you good as new for cheap. I realize this is geared toward a newbie, but hey, new people are coming into the PC scene every day...