How 'tough' are cpus? I have a I9 14900k in my fairly recent build and everything was fine up until a couple days ago I started to get blue screens and the cpu was running hot on idle, usually around 40c it was 20-30c higher. Fancontrol was playing up and didn't want to open, I'd sometimes get a blue screen trying to open it. When It was open I was able to control cpu and case fan and even at 100% cpu fan speed it maybe got to lower 50s.
I did a fresh install of windows, installed fancontrol and realised that the cpu fan wasn't spinning up accordingly, apparent from more noise now, it was always quieter than the case fan but I forgot what It actually sounded like. Cpu temps are now around 35c... I've set a lower max temp and the ambient temp is lower than usual in the room right now, some peace of mind. Although I'm worried that the over heating has put stress on my pc and It'll bluescreen/crash easier now, because It wasn't exactly cheap.