Man, I was working a desktop support job when they first started to use magnets in the laptops for the closed lid mechanism. I was trying to set up a laptop and I for the life of me couldn’t get the screen to turn on.
After like an hour of trying to figure it out and a call to Dell support, I shifted the laptop and the screen turned on. Stupid laptop was so thin the magnet from the laptop under it was causing it to think it was closed.