That's so weird. Maybe there is a malware in your computer. Anyway, I'm sure there would be someone is able to help you with this.
Or Simply a ghost trying to tell you "The body of Agatha09287, it's in xxxx" :-P
It might be the thermal paste gone bad. Try to apply a new one than you should be fine. Also, you can also buy a cooling pad for the laptop? It really helps with the temperature.:-)