Hi,
I'm not sure what's going on with your network connection, but I have at least one idea.
You might be seeing the problem fixed by the utility at https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=22026. I would give that a try.
The Windows 8 download is at https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=21642. (This same webpack works for Windows 7 too.) If the file is causing problems, there is an older version of the download at https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=23070. You don't need to extract these files to run them. Just run the exe file to install the drivers. I don't know what brand and model of your computer or motherboard you have, but you might want to try the drivers from the manufacturer's website. Those files are usually the versions tested with your system.
I hope this helps.
Mark H