I haven't been that I am aware of, before or after these problems began. I do have the Nvidia graphics utility installed and it is capable of doing that, but it is not configured to do that at the moment, as far as I know, and I have not altered its configuration in any way since in the interval between when Elemental worked and when it stopped working. I did try to run Sword of Aragon in that interim, which I couldn't get to work, but in the process of doing that I tried to force that application to run in specific video modes (via the compatibility tab of its exe, which should not effect anything else).
I did a sweep of the registry, other then MUICache, Typelib, etc. Elemental has no settings there at all. The ini for Elemental is set to my screen resolution (1680x1050).