I discovered this problem today for the first time.
Last I logged in was yesterday morning, and the only thing that has changed since is that I have installed another game (Devilion). All my drivers are the same as before this error. But now, the SquareEnix logo freezes on screen and I have to CRTLAltDel to get out of it.
I have no idea how or why this happens, but it sure is frustrating... :/