it usually due to overpowering your pc, such as playing or doing something your pc can’t handle or the position in your house or office you have placed for an example I use to sleep in a basement and it was cold there so my pc was always cool and when it would get hot because I would overpower it quickly got cooled because of the place I was, then I moved up stairs to the main level and, now my pc is warm all the time, due to the environment i was in