No, I did not say that Windows used to crash. I said IT used to crash - IT being a reference to the aformentioned DISPLAY app in the Control Panel. And what I mean by that is the Display app opens just fine and all tabs EXCEPT THE VOODOO2 tab work just like they're supposed to. But if you click on the VOODOO2 tab....you don't see anything happen for 3-4 seconds, then the display blanks out to black and comes back with the last tab still up that you had seen before clicking the Voodoo2 tab. That holds for another 3-5 seconds, then the display blanks black again and comes back, still on the last tab, but now you get Windows saying the Display app has crashed or stopped working or whatever. You click OK and that message and the Display app both close and you're back at the desktop.
When the SLI was working properly (after the 1st reboot), you could click the tab, wait 3-4 seconds, watch as the screen blacks out, then when it comes back up, you see the Voodoo2 tab contents and can interact with it. The 3dfx logo plays on the little screen and you can click System Info and see "SLI: DETECTED!!" and all the numbers.
Since I installed the Gravis software/drivers, I can't get that tab to work anymore. And I already know from past experience that if that tab doesn't work, no games will work using the Voodoo card. Windows will hang and then, if I'm lucky, stop the program and shut it down bringing me back to the desktop.
The nVidia Riva TNT2 32MB AGP card works perfectly fine no matter what, but I got the Voodoo2 cards in order to play GLIDE games and I use it in Final Fantasy VII, Quake 1/2, Unreal, etc.
And it was doing this behavior right from the start after a FRESH Windows 98 install, so it has to be some kind of hardware conflict or something. A resource mis-set, whatever. I don't know. I don't THINK the board needs a cap job done, but it IS from 1999 (so about ~17 years old). Maybe it does.
Maybe I also need to look into getting a Windows 98 SE update somehow. I'm running Windows 98 FIRST EDITION - which I have a completely legal copy of bought back in 1999 before SE had been released.