The other day, I fired up Morrowind for what I believe was the first time since I bought Skyrim. The music and menus work as expected, but the render is completely blank. I tried several save files, but didn't try starting a new game. Skyrim and Oblivion work properly, as did Morrowind previously.
Windows 7 64-bit
Athlon64 X2 3200+ (939) (not 100% sure about the 3200 part, but the rest is certainly accurate)
3GB RAM
GeForce 9600 GSO video with 768MB RAM