While playing some games, I noticed I could hear my CPU fan through my headphones, so I ran HWMonitor. It said my CPU temp was 100ºC, so I got off and checked the idle temp. I felt the air next to my cpu fan and it didn't feel too hot. This has never happened before yesterday.
PC:
CPU: AMD x4 860k
CPU Fan: Stock Cooler
Motherboard: Gigabyte F2A68-H
PC:
CPU: AMD x4 860k
CPU Fan: Stock Cooler
Motherboard: Gigabyte F2A68-H