Good afternoon and thank you for posting on the Final Fantasy XIV Technical Support Forums.

To clarify, what do you mean by 'a complete system crash'? when this happens, does your entire PC shut down, or does only the game crash and the screen goes black?

Can you submit a Final Fantasy XIV system report? Simply go to the 'Config' option on the Final Fantasy XIV launcher and to the right of 'System Information' click on 'Display.'

Do you notice any patterns to this? Does it only happening certain areas or while doing certain actions?

What have you tried so far in order to alleviate the issue?

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!