This is in my mind just now. I remember this from a few years ago. I was getting ready to sleep one night when my monitor started to make a crackling sound like a squeeky door moving back and forth in small steps. The monitor is a big box siting on top of a pivot that is the stand. The monitor kept making the noise a full 10 minutes. The computer and everything was off. The room was quiet except for that sound. Then felt the ground liquefy which was a small earthquake. It was only about a 3.2 magnitude, if I remember correctly, just enough to be felt but no major damage. That's about it.