Win7 Ultimate 64 bit Intel DH55TC board i5 processor 8 GB Memory I a build this system and loaded OS & then ran Intel driver setup. All completed. The Network & Sharing shows no network. Device manger shows Intel 82578DC gigabyte installed but cannot start (code 10). The system worked before I installed (from scratch) win7. Any thoughts on how to get the NIC to connect to the OS?John Lenz

Hi, According to your description, it seems the NIC driver issue. I suggest to perform these tests to solve this issue: 1 Update BIOS, you can download it on: http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&ProdId=3143&DwnldID=19422&keyword=Intel+DH55TC+board&lang=eng Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information. 2 Make sure the driver of NIC driver is compatible with Windows 7. Reinstall the NIC driver, also update the driver to the latest version. 3 If there is no Windows 7 driver of NIC, you can try to install the driver with Vista Compatible Mode: · Right click the driver and click the Properties option. · Select the Compatibility tab. · Select the Run This Program in Compatibility Mode option. · From the drop-down list, choose the operating system you ran before upgrading to Vista. · If necessary, select the option to run the program as an administration. · Click OK. Furthermore, you can contact network card manufacturer for further help. Hope it helps. Regards, Leo Huang TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

THX, I updated BIOS and the NIC connected. My system builder assured me that I was current but a newer version was available.John Lenz