crashing on start up

Hello all, I purchased COD:Black Ops 6 today and it is crashing without an error message when the game auto shuts down. However, I do get this message on startup. I have never seen it before: It reads (i cant upload the image for some reason): The available page file size may be insufficient...

So this started recently where every time i flip the switch on my PSU or press the power button, my desktop PC will boot for a second and then turn off and no matter what i do it won't stay on. i tried making sure my cpu block is making full contact, i made sure my AIO was plugged in the right...