The processor caused the motherboard to fail.
The processor caused the motherboard to fail.
Your motherboard might not be suitable for your processor, as it seems the chipset can't handle the 2 quad Q6600. This could definitely be a problem.
It seems more likely the power supply or mainboard failed rather than the processor.
It's questionable, though the alternative is conceivable. As Shrimpbrime pointed out, the PSU seems more probable.
It might occur if the motherboard lacks overcurrent protection and the VRMs are faulty. Given the condition of the board you purchased, it's likely the PSU shares similar issues. As @ShrimpBrime mentioned, the problem could also stem from low-quality components.
It's feasible but something I haven't encountered before. Can you replace the components with standard parts to check for issues? What occurs when you press the power switch?