I once replaced an entire power strip because the user said that it would turn off at random. So I took it back to the IT room and plugged in all the things and watched it, thinking it would short out or blow a circuit breaker or something.

Then the user called me again saying the new strip was doing the same thing and I should replace it. So I schlepped up to their office and replaced it with a third one.

Then they called me again saying it keeps happening. So finally I looked at where they had put it and it was right where they’d put it when they pushed to back their chair up from the desk.

And they didn’t realize it.