Computer Restarting While Playing

For some strange reason starting today Final Fantasy XIV is causing my computer to restart.

I was puttering around the Hinterlands when the screen went greyish, the music started stuttering and a few seconds later my computer had restarted itself.

After the third time it did this, it also took my graphics card driver with it, and I was forced to reinstall (and update) my driver. The driver has been reinstalled, updated to its latest version, both my monitors are displaying and working again, and the game is still causing the computer to crash and restart.

Any help would be appreciated.

open your windows event viewer and take a look what causes the crashes. Sounds to me it could be a overheating problem or a directx issue. But hard to tell with barely any information.

What am I looking for in the Event Viewer?

I had a similar issue in the past and it ended up being the power supply was going bad. From what I learned is that random restarts like that happen because not enough power is going to various components causing the CPU to reset, which in turn resets the whole computer. Thankfully power supplies are fairly inexpensive anything above 500W should be more than enough for most set ups.

Also joining with possible power supply issues as had same thing myself. Mine was rebooting occasionally and it got more and more frequent, swapped the PSU and problems solved!