Okay I got my W10 upgrade, but as I'm not ready yet, I put it in hidden upgrades, unclicked box. There are 12 important upgrades ready to install, all of which are security upgrades for W7. Most are (KB30*****), one is (KB29*****). When I press install, it starts to download W10. How do I get important security downloads for my W7, and stop it from downloading W10? thanks in advance.