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

When did this issue start occurring? How often does this happen and did you notice any patterns (Does it happen more often after an OS update or a FFXIV patch, etc.)?

What exactly happens when your PC restarts? Do you receive any kind of error message? Does it happen repeatedly or if you restart your PC, will it work fine the next time?

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