Ok, I only have this problem with XIV, and so far it only happens if I try to change active windows. It has happened when I alt+tab, when I click a window behind my game, and when I click on xiv's active bar to move it out of the way to get to a window behind it. It's really, REALLY annoying, and has only been happening in like the last week at most.

I've made absolutely no major changes to my pc, nothing that would trigger a sudden onset of BSOD. I've done pretty much everything suggested to fix the problem, I've updated my drivers to the most recent from nvidia's site, I've run 3 different antivirus/malware programs, I've defragged my hdd and given it some more free space, and I've even run a memtest on my ram to make sure there's nothing wrong with it (it passed all 6 tests all 4 rounds) I have no idea what else to do besides reinstall xiv, and I don't want to do that unless I have to.

Anyone have any idea what else I can do?

My pc:
Intel i5 760 quad-core
4 gigs ddr3
Nvidia GTX 460
850 watt psu

The pc is only a few months old, and I've had no problems until recently. This really bugs me because I like to browse forums and recipes and listen to music while I play and this has made it impossible to do so. The game runs indefinitely as long as I don't try to move or switch windows.