Comment by 2xpress

I've had this happen to me when the SD card would snap in 2 inside the SD card holder on the PI. Happened twice with the CanaKit PIs, once for PI3 and another time for PI4, with the SD cards that came in the CanaKit. I just put Raspbian on some fresh SD cards that I bought separately, plugged them in, and everything was back to normal. I think the overheating was from the short circuits inside the snapped SD cards.