I had the same issue with an ECS board I picked up at Fry's as part of mobo/cpu combo. This would lead me to think it is probably the board. They are notoriously poor quality. Which is why they are practically giving them away. Case in point: a few weeks ago saw in Fry's ad Q6600/ECS mobo combo for $279.99. Newegg price for cpu only was $281.99.
When in doubt buy ASUS
