Couple Errors I could use some help with

[Estovia]

My primary problem right now is that on occasion, the game screen will go black.


I play on an MSI GT660 laptop. i7-740QM CPU, 6Gb RAM.
Windows 7 Home premium x64, DX11.
Video is GeForce GTX 285m, drivers version 8562
Playing from a fresh Titanium install.


-The game has not crashed, as I can still /exit and reload.
-It is not a spell effect, sometimes it's just while I'm sitting in a bar in Freeport.
-Usually I have about a half-second notice that it's about to happen, when the window will have a quick blip effect right before it happens.
-It does not register with the Nvidia control panel as a driver crash and/or recovery (as best I can tell.)
-I do play in windowed mode and alt-tab to Firefox with relative frequency.


I was experiencing some full-on BSoD system crashes, but they seem to have been solved by converting the launcher to XPsp3 compatibility mode.

I was getting a "not responding" message during many load times, but that also seems to have been solved by XPsp3 conversion.

Anything anyone might know would be great. The only thing I found in the forums that might relate was possibly needing a DX9.0c file that's no longer included in the DX11 install.