Some years ago Jona lewie composed and performed a cute little christmas song: "Stop the Cavalry." Pertinent to my post is the following excerpt: "Oh I say it's tough, I have had enough, Can you stop the cavalry?" My main problem with windows 10 is the fact that it uses an inordinate quantity of data, And no matter what I try, it only gets worse. For example, with windows 8.1 I could go to my internet settings and prevent both sound and pictures from manifesting in certain web pages. Now it is not possible, and I am obliged to make use of an ad blocker, which leads to the page I am visiting to freeze when it detects an ad blocker. Also, no matter how often I stop the updater, it just restarts on its own volition. I have had enough, so kindly tell me how to revert to windows 8.1, please? Thank-you, Mr Churchill.