I also get can't create z buffer. i have tried: death track racing, half life, jeff gordons xs racing, packman adventure in time, lego racers.

It seems to be almost like every time it goes into 3DFX 3D mode, the screen dies. I tried johnney harpers grand prix and I know this game run under 3dfx, i got the game to recognize and start under 3dfx, but when the game started the screen when black, like half life. The game is running, sounds/ controls work but you can't see anything. and no it isn't cause i'm no using passthrough.

You aren't using the vga passthrough cable

I am using a vga passthrough thats the thing

the passthrough works cause the radeon is plugged into the voodoo, and the voodoo into the monitor. I'm not a total idiot. I'm using 3dcc to switch between the voodoo/ radeon for primary 3d and when i set it to voodoo and go into 3d it's black, I have the radeon passing through the voodoo while doing this.

Use the last reference drivers to begin with 3dfx Voodoo1 V3.01.00 > get them at falconfly.de

2nd it looks like its in the P3 rig? I assume it maybe a 133mhz FSB? I had issues with my Diamond V1 till I dropped the bus to 100 or 66MHz!! It was normal brightness at 66MHz, It looked like I had a low gamma setting at 100MHz FSB. 133MHz usually just crashed or showed bad gfx corruption.

For certain games you may need to drop the glide2x.dll in the root folder of the game to work or a Minigl driver.

Being a V1 you really can't use more than 640x480.

yah my cpu's a 133, you gave me any idea though.... nope, running a 100 fsb doesn't fix it. and i got my driver from there.

what does dxdiag say about your voodoo ?

I'll check

all tests failed, could not start the direct3d test, and direct draw test my monitor went to sleep. (aka no signal) and yes the passthrough cable was connected.

Did you remove or uninstall older drivers? Maybe they are mixing up a bit. I use Driver Cleaner 2 (2-passes) in safe mode to remove my 3dfx drivers then in device manager remove any instance of the card. Might have a newer glide2x.dll or something messing you up.

What about using the reference drivers and trying out some of the tech demos? http://falconfly.de/artwork.htm (scroll down some)

If that doesn't work then check something for me. Pull the card out of the system and smell it! Does it smell like fish or a bad smell? If so then there are bad caps on the board. I had this problem with a Diamond voodoo 1 I bought off ebay.

Last thing I can think of is pull the ATI card and give an older 2d/3d card a shot. Riva 128/TNT...

it's a 1997 rev e diamond card, and the top chip with the 3DFX logo smells of burning plastic after only five minutes! good thing, 1 it was $10, 2 the guy i bought it from is awesome just bring it back replacement or cash back.

actually on closer inspection the pins that connect that chip look pretty bad too.