Something i noticed now when the light was off, is that one LED is RED, should it be so? - The LED that is green is closet to the mini-USB port, the other one is lightning RED... 
The red LED should not lit, in my board it lit when no 12V from PSU. In normal operation the red LED is blinking. If the fan is on then maybe some part of the board not receive 12 V.
The fan starts as soon I connect the USB to my computer, even without the PSU. It recognize the board on both the Windows and the Linux laptop as shown in my pictures.