Tonight I purchased a new fan for my PC. It's just the one in the back, not the processor fan. Now I'm not a modding guru, so I just bought a basic fan and replaced my existing one. Screwed it in and connected the 4-pin power cable. LED turns on, but the fan doesn't turn on. Maybe it's a defect? Any ideas? Also, I have a little LCD display on the front. It's displaying a temperature, but I'm not sure what temperature it is. Anyone know if there is some generic software to control what's being displayed? I have a custom PC so I have no idea what I would need. Edit: I just realized, maybe the new fan requires too much power to run and the current connector doesn't supply enough?