genthug :
Okay.
Have you attempted to start it in safe mode and to run the game yet? Have you actually monitored your temperatures? Because the only nod I see to temps is that you've replaced case fans. I don't suspect this is the issue as you stated you ran both CPU and GPU stressors and those in and of themselves did not crash anything.
Does the machine crash when you uninstall your GPU drivers and try to run the game? You will still be able to run the game--you will not have the benefit of the utilization of NVidia's drivers; but you will be able to run the game ("will be able to" in loose terms here).
I will attempt safe mode now, as for your other questions.
I have not uninstalled GPU drivers and tried to run the game yet either, will do that after safe mode if problem consists.
Yes, been monitoring temps and load the whole time up until crash. Both CPU and GPU temps are always below 65C.
I can stress test GPU100% and no crash, as well as CPU 100% no crash but if i stress test BOTH cpu and gpu, a few minutes in the GPU crashes and fans spin to 100% as they do when i play a game.
So i've determined that there is a problem when both of the components are put underload, with replacing all things except the cpu, the cpu must be fried from a previous PSU that had a malfunction and fried any hard drive that was plugged in?