I've had my processor for 4 years now and never had a problem with it until recently. These past few weeks I play the games I normally play but after a while the PC shuts down because the processor overheats. I thourougly dust everything and reapply thermal paste but the problem continues. I have an H100i liquid cooler and many fans. I'm running out of ideas of what's causing this. Could it be malware, drivers or something else?