Tidying up
I'm only tech support to friends and family (*sobs*), but..
Years ago, in the days of Windows XP, an anally-retentive friend of mine phoned up in a fluster, complaining that his new computer had stopped working. Working through what the start up sequence was doing over the phone didn't really highlight anything and was simply confused matters, so I enquired what (if anything) had happened before he turned it off last time. “Nothing — I'd just tided a load of files away and then turned it off - nothing was wrong” was the reply.
“What do you mean you ‘tidied a load of files away?’”
Turns out the overly-fastidious numpty had decided he didn't like how his C:\ drive was organised, so made his own file system, moving around Windows folders and such 'til it looked neat.
A little knowledge is a terrifying thing.