Stop using drivers which were not made for GeForce 4 Ti.

The readme and .inf for Windows 9x/ME, ForceWare Release 80, Version: 81.98
both list: "NVIDIA GeForce4 Ti 4200" and "NVIDIA GeForce4 Ti 4200 with AGP8X" so the driver should work but think it is really designed for DX9, from Nvidia.com: Microsoft DirectX 9.0c and OpenGL 2.0 support . Have you tried DX9c ?
You can get the original Win98/98se 2004 version here: https://www.3dfxarchive.com/directx.htm

I would try an earlier driver. The 29.42 is the first one that lists the Ti4200, so I would start there. https://www.philscomputerlab.com/nvidia-9x-gr … cs-drivers.html

I did upgrade Win98 with everything some time ago, with a package I found online.
There I did update to DX9c with the same problem.
I did have the same problem, but did not notice if there was only 2mb ram or not.
This is why I reinstalled the OS.

I did start with an older driver, can't recall which one.

I will look into it tomorrow, as it is very late, and I need to go to bed.

Yeah try older drivers.

Another tip - with Win9X you might want to stick to DirectX 7 or older. Once you go beyond that you can run into problems with crashing/BSODs with games, especially if you are using VXD-based sound drivers. You really only need newer DirectX if the game needs it. You can change to an older version by getting "DirectX Buster" to uninstall the current DX.

The 29.42 is the first one that lists the Ti4200

You can use any old driver with strings that mention GeForce 4 Ti. Correct model is irrelevant.

Another tip - with Win9X you might want to stick to DirectX 7 or older

You can't. Nvidia drivers for GeForce 4 or newer have problems with DirectX versions lower than 7.0a.

The Serpent Rider wrote on 2020-08-03, 00:56:

You can use any old driver with strings that mention GeForce 4 Ti. Correct model is irrelevant. […]
Show full quote

The 29.42 is the first one that lists the Ti4200

You can use any old driver with strings that mention GeForce 4 Ti. Correct model is irrelevant.

Another tip - with Win9X you might want to stick to DirectX 7 or older

You can't. Nvidia drivers for GeForce 4 or newer have problems with DirectX versions lower than 7.0a.

Okay, in that case he can also try the 28.32.

If it were me I would pull the Voodoo's and get the main GF4200 card working proper first. Trying some later version drivers that are well documented to be stable and use the "suggested" DirectX version they were designed for. The 4200 could have problems and is why things are screwy 🤣. Side note: recently found an issue with a 6200, SMT caps started going bad giving me all sorts of problems that one would not think were cap related but they were. Just a thought...

As Horun says, you have to install only the 4200 Ti card first. With for example the 41.09 drivers and directx 8.1
Verify that everything works well. sound is also important. Run a benchmark.
Then shut down the PC and install a single Voodoo 2 card. When the system recognizes it and run well, turn off the PC again and install the second one in SLi.

I tried directX 9 from 2004, and now the Geforce card has 2079mb ram according to dxdiag.
It fails all tests from Direct3D 7,8 and 9.

I tried to uninstall the drivers using Add/Remove programs, but get an error saying program has preformed an illegal operation, and will be shut down.

Looks like I need to reinstall Win98 yet again.

I will then remove the voodoo2 cards, and try older drivers first, as others have suggested.

Hope you'll find a solution, I will receive a FX5500 soon, I expect to have same kind of issues 😀

I would try the GeForce 4 in a different system if possible to rule it out as an issue with the card vs software

The Serpent Rider wrote on 2020-08-03, 00:56:

Another tip - with Win9X you might want to stick to DirectX 7 or older

You can't. Nvidia drivers for GeForce 4 or newer have problems with DirectX versions lower than 7.0a.

Yeah I install 7.0a. I should have been more specific. That will definitely work for a GF4. I have not found anything it doesn't work with.

I haven't played much with anything below 7.0a in ages but should sometime. 7.1 and later is when you can start to get kernel/DirectX crashes with VXD sound drivers.

I got it to work.

I installed Win98Se again, and installed first DX7, and then DX8.1.
Used drivers 40.71 as this was the earliest I didn't get an error when installing(earlier versions complained there was no Nvidia chip detected).

I have not installed the Voodoos back in again, as indeed one of them was a 8mb version.
Have to think on it, as these cards are rather expensive now.

Excellent glad to hear you got it resolved.