Here is the reply
Thank you for your kindly mail and inquiry. About the issue you mentioned, the overclock result will depend on your peripheral devices, and the hardware overall performance. It might cause the system/hardwares cannot accept your overclock settings, and we will not guarantee any result caused by system overclocking.
Thus, we suggest you to load BIOS optimized setting and see if the problem still occurs or not.
Meanwhile, according to Microsoft Windows 7 hardware and driver design requirement, this product does not fully support Windows 7. So we do not have relevant driver for this OS.
Besides, if you install Windows 7 on this motherboard, it is possible to cause issues like: not able to install OS or system unstable, etc. Therefore, we do not suggest you to install Windows 7 on this motherboard. Sorry for the inconvenience that has encountered.
If you still have any further question or suggestion about our products/service, please do not hesitate to contact us. We will try our best to help you resolve the problem ASAP.
It seems I have a hardware/software incompatibility. I don't think it's worth sending in for further testing.
If there were any way to change the memory speed I could just tweak the FSB but that option is not supported. I guess this is the end of the story.