Many thanks for all the years of replies to an issue Microsoft is clearly unwilling to address. Having tried most of them, and not using a joystick here is what I have found. I have three Windows 10 computers and each one is manufactured by a different
firm: i.e. HP, Dell, and MS Surface. They all have one thing in common: every time there is a windows update from Microsoft, Screen Saver switches to "none" as my screen saver. This is what I find without exception at least for the past year. My solution
is as follows: 1. Open Screen Saver. 2. Change the "new selection" from "none" to whatever you wish to choose by way of a screen saver.....bubbles, mystify, photos you may have chosen.) 3. Change the time duration setting by at least one minute in
either direction. 4. Apply the "changes" and exit. This works for me but may not work for others, and I do make use of USB for my Microsoft Mouse and an external hard-drive. However, this only works until the next MS update comes through. Then I
repeat the process and all is once again well. The nice thing with this is that I always know when I have received an update at night because in the morning my screen saver has been turned off ! No surprise that Microsoft has not fixed this problem....sadly,
they have a long history of 1. Ignoring problems 2. Finding ways to "upgrade" a feature that once took only one simple step to complete, and turning it into a multi-step process. (e.g. the failed "windows 8" OS. I do hope the steps I outlined below
will prove helpful for some but I suspect that this glitch behaves erratically across the user spectrum. Good luck.