Good questions. I don't know how to check the DX Diags. I did look in the Direct X file, went to the shortcut, and it appeared to show the diagnostics as A-Ok. Am I looking in the right spot? And what am I looking for there?
SFC OP played fine for 3 test games later today, and then began its same odd pattern of crashing to a blue screen with those types of phrases. Sometimes it would crash during the game, then as I was setting a game up even before I started the game it would crash.
OP would crash, but often the blue screen would say that you could continue, but you couldn't really. Sometimes it would let SFC Op continue, but only for a little bit. I'd try to exit out of the game, but it would then crash anyway. You had to escape out, but most of the time (almost always) it would lead to a freeze / crash and restart of windows. During the "freeze", the picture would go all scrambled and jumbled. It seemed to get worse (more frequent problems) the more I tried to play the game.
Thanks for any more thoughts & insights.
KC