I have just started playing a game called 'Ark Survival Evolved' on my PC. At random intervals, my PC will instantly shut down without any warning, and will not reboot unless I manually flick the switch on the back of my PSU. The game itself runs very smooth on my setup, however my fans become very loud. I originally thought something was overheating, however I have downloaded software to check my temperatures and nothing seems particularly high whilst playing. I currently have a quad core AMD A8-6600k CPU @ 3.9Ghz, with overclocking it can reach around 4.3Ghz. I also have an Nvidia GeForce GTX 950 GPU, 8GB RAM, 1TB Hard Drive and a 500w PSU. If anyone has any ideas as to what is causing this then I would be happy to hear any suggestions.