So basically I downloaded halo since it came out early to play with my friends who’ve been EAGERLY waiting. I ran the beta of the game perfect no problems at all great everything FPS was good. For some reason I have issues running the released version of it and it’s running my cpu at 100% and I only played for a LITTLE bit maybe a match. At most. My computer just powers off on it own as if I lost power in my house. I wait a bit maybe it over hearted I wasn’t 100% sure. Anyways I turn it back on and tried again but within the Minute it does the same thing before I even OPEN any kind of application. I wait even longer and I can run my computer trying to figure out what’s wrong and I try a different game and I’ve never had issues with this game prior to this event but now it runs very bad with AWFUL FPS and it’s just a struggle. At this point it’s been two days I’ve tried so many things checked all of the drivers uninstalled windows and reinstalled it. I got it to run for like 2 hours today trying to stress test it and was working okay is for a while. But then I try the game Ryse son of ROME. I can’t even get 30 FPS with this older game at low settings on the graphics quality. I run the game maybe like 15 mins and then again my computer just shuts down. Please does anyone know what I can do? I have no idea what’s wrong with my computer I have a 3070 graphics card and an AMD 3600 cpu 16 gigs of ram and plenty of room on my SSD as well. After running halo infinite which ran my cpu up to 100% for some reason my computer just stopped working basically4 possible conditions can cause this.

#1 reaching a thermal condition equal to or beyond 85C (or temperature value set in bios where system is set to shut down if reached ) where the system shuts itself down to avoid destruction of the CPU
#2 cooling fan RPM ( tach pulse ) is lost and so it doesnt see fan spinning to cool CPU and it just shuts down without warning. Cooling fan is dying or intermittent tach is sensed.
#3 power supply drops below the minimal voltage of operation for a voltage rail and it shuts down or stays on with black screen.
#4 microfracture in a trace that when system warms up the connection opens and causes a fail condition in that an open circuit is created.

I'd install speedfan or some other temperature monitoring software and see where all your temperatures are at. If any fans are groaning or making vibration swap them out prior to power supply swap. Lastly would be to swap out the PSU if a spare is available that can run on that system to see if that corrects this.