One other thing: you have a new motherboard, but you did not mention the case, etc.
Did this go into an older case? If so, what type power supply?
From the manual:
Quote:
The power supply with 20-pin or 24-pin cables can both be connected to this 24-pin connector.
Connect from pin-1 for either type. However, a 20-pin power supply may cause the system
unstable or even unbootable for the sake of insufficient electricity. A minimum power of 300W
or higher is recommended.
