's mode' is the 'no way back' wall you can disable.. stupidly requiring a microsoft account to do--in order to install stuff on your pc without needing a damn microsoft account in the first place. 's mode' is becoming more common on higher-end hardware now, too, not just the cheap atom-based crap with emmc and 4gb ram. i've seen it on i5 laptops, ffs.
the other is a setting, which is just a scary 'warning' about installing programs from outside the garden, that you can change.