電腦火牛風扇突然轉得好慢

Maybe your fan's screws are loosen. So when you upside-down your psu, the fan will run very noisy slow because of your fan's parts are touching the metal. To fix it, you maybe need to give back corsair to fix th fan.

哦，壞風扇，唔使解，你識換，廿幾文，唔識換，就要幾百文。