I'm having ethernet controller issues with this board as well (Win 7 64-bit OS). On the first boot of the day, the ethernet controller does not work. "There is a problem with the device" is the report from Device Manager. In Device Manager, under the "driver" tab for the controller, I can disable it, and then re-enable, and everything works. Subsequent boots within a few hours are ok. Updating both the driver and BIOS to the latest have had no effect. Hopefully Intel will chime in here with some insight.