I was showing my son a nifty text effect on my computer.
And my PC froze/locked up on me.
I guess it wasn't the Audigy after all. And now, I have no cards in my system, and this is a new system. I have to believe there's something unstable about my hardware, and now I am at a complete loss.
After getting my hopes up, this is such a disappointment. Well, I guess I'll just have to give it a break for a while and think about other options. Thanks to everyone who offered suggestions, though.