I have assembled my new cpu but it doesn't turn on. This is my second time assembling my computer and my first time went on smoothly. But this time I missed on something and I have no idea what it is. Every time I press the power button, nothing happens. I'm sure there is power on the board because the led indicator is active. I also noticed that the cpu fan moved a little as if it will spin, but it didn't continue. I'm using ASUS P5G41-M Motherboard..