Hello Rich,
I am not quite sure why all the error messages you are getting; however, we have to keep in mind that your system is not only custom built (and did not come with Intel® WiDi software preinstalled) but the fact that the wireless adapter integration has not been validated or certified on your system.
Intel® wireless adapters are meant to be professionally installed by Original Equipment Manufacturer (OEM) technicians on certified systems only. We recommend the Intel® Centrino® Advanced-N 6205 For Desktop and Intel® Centrino® Advanced-N 2200 For Desktop.
Intel� Wi-Fi Products; Regulatory information regarding hardware installation or upgrade
I am not saying that the error messages will disappear by replacing the wireless adapter since this is not a common issue but appears to be more specific instead. Besides the above, I may only suggest rolling back the graphics driver to a previous version as the latest version was associated to a black screen issue (no error messages though) as described here.