My PlayStation keeps crashing out of nowhere and I don’t know why

Out of nowhere my PlayStation has started to freeze up and crash on me out of nowhere for no apparent reason. I couldn’t really find anything to determine the problem because it Completely shuts it down. Something that might help is I noticed the playstations fan was blowing very weakly, but I don’t see any signs of blockage preventing it from spinning normally I have also tried initializing it with no avail