Nvidia GTX980, computer crashes with no BSOD (both DX11 and 9)

[Duuude007]

I've had this issue before, but without more information I couldn't confirm whether the symptoms match exactly.

In my situation the system's power would turn off due to sensors detecting critical temperatures in my computer.

Logic dictates that if heat is your issue, it could be due to poor air intake, poor exhaust, or issues with internal circulation/airflow, particularly when your CPU & GPU are working their hardest, such as during FFXIV.

If you determine heat is a factor, I would:

1. test all fans are running, not jamming with dust etc.
2. use canned air to blow all dust out of your computer (unplugged and outdoors, of course)
3. Minimize the tangle of cables inside and near the PC
4. Provide at least a foot of unhindered space in front of all intake and exhaust fans (desk cubbies are the absolute worst places for computers)
5. install some programs that offer early warnings for heat issues.
6. If necessary, replace exhaust fans with larger versions and/or ones that offer higher airflow. Ideally intake fans will be bottom-front, exhaust top-rear and possibly side(s).
7. More extreme, but you could even consider water cooling for cpu or gpu. But the cost will be significant.

I hope this is helpful.