I'm not sure how you would do a hard-reset with a kid.
Try using a blunt instrument.
You are dating yourself.
Lots of computery people end up doing this, though.
And MS expects some preteen in Singapore to know better? Good luck with that.
That's an unfortunate example to choose, preteens in Singapore being likely to be both better educated and more law-abiding than their US equivalents. (And quite possibly more affluent too.)
A list is only as strong as its weakest link. -- Don Knuth