Well, I installed the new graphics card last Friday. No change as far as the shutting down goes. So I went ahead and ordered a new ASUS TUF B350 mother board. It came in today, so I installed and downloaded all new drivers and bios update. Ive been on the pc ever since, even played several hours of games and it is running perfectly and has not shut down. I noticed with my old Asrock that I was constantly pulling around 70A even just setting at the desktop, and when I tried to play call of duty it would peak over 100A. With this new board, I am around 40A idle, and peaking about 67A gaming...wondering if that was my issue?