Thank you for the post. What is the board you used? As 82578DC is an onboard NIC, it
is recommended to check with the board vendor as this is an integrated part on their system.
It would be best the board vendor can further assist in case there is hardware issue.
Here is the website regarding support for onboard NIC for your reference
Have you tried upgrading the driver and the BIOS for the system?
I checked my BIOS and it is BIOS Version/Date - Intel Corp. KGIBX10J.86A.3206.2009.0805.1855, 8/5/2009
However, the https://downloadcenter.intel.com/product/40077/Intel-Desktop-Board-DP55KG site does not provide any updates for Windows 10 64 BIT OS. So it is not clear what if any update is available or would apply to my system. I am assuming you would want me to update to the BIOS Update [KGIBX10J.86A] version. However, in reviewing the release notes I do not find anything that indicates that the updates will solve the network adapter issue that I am having. Further the BIOS update documents very clearly states to update the BIOS on your computer only if the newer BIOS version specifically solves a problem you have. Unless you see something in the release notes for the subsequent BIOS updates since my current version, I do not feel that updating the BIOS is in line with INTELs directions.
Please advise on the next course of action.
Thank you for providing the additional information. Since this is an Intel desktop board, I will forward your inquiry to the desktop board support which can further assist you on the integrated components on the system.
I regret to inform that the issue that you are experiencing is could be related to the installation of an unsupported operating system., your motherboard does not support Windows® 10. A driver and BIOS update might address the issue, but since there are no drivers for older platforms and Windows® 10, this is consider expected.
I apologize for any inconvenience.