Hi, i bought it on amazon.com and the fan doesn't spin even at initial boot. I was playing Batterfield 3 and the PSU was very hot and the fan doesn't spin at all. My unit is defective or does not reach sufficient temperature to turn the fan?. Here, i create a video of it: http://tinypic.com/r/rsbpxi/5 My gaming pc: I5 4670k Asus gryphon z87 Corsair vengeance pro 8gb 1600nhz Evga gtx760 supercloked acx cooler 2GB Samsung 840 evo 120GB Samsung DVDRW Case: Corsair obsidian 350D 2x Front Corsair AF140mm Quiet 1x Rear Corsair AF120mm Quiet 2x Top stock case fans My PSU is defective or it's normal?. Corsair team said to me that the fan should spin for at least 4 seconds at initial boot. I really need your opinion!..