A few years back I got this pre-built pc and have been using it since with little to no issues. Recently I upgraded the motherboard CPU and RAM. It was working fine the first couple of weeks but recently it has started shutting off and going straight to boot when in the middle of a game, no bluescreen or audio hang. This only happens when I'm playing high-intensity games such as Destiny 2 and Apex Legends. It has not happened when playing any other games including Overwatch and League. I regularly check the temperatures while gaming and it doesn't seem to be overheating, even under a heavy load, everything is staying under60-70c.