I also found that once I made the changes to the Registry, I got Win7 updates again - all of 360MB to be exact. I hadn't been getting them ever since MS installed the GWX nag. I used the automated registry files in the article.
http://www.zdnet.com/article/how-to-block-windows-10-upgrades-on-your-business-network-and-at-home-too/?tag=nl.e539&s_cid=e539&ttag=e539&ftag=TRE17cfd61
http://www.zdnet.com/article/how-to-block-windows-10-upgrades-on-your-business-network-and-at-home-too/?tag=nl.e539&s_cid=e539&ttag=e539&ftag=TRE17cfd61