I then went to Control Panel>Sounds and highlighted one of the system sounds and pushed the test/play button. What was odd was that even with multiple restarts I still had no sound. I had just the "driver enabled" but not the "unknown problem" message. It was still there after installing the driver. I did have the"Drivers=mmsystem.dll power.drv" line in my system.ini immediately after install. My disc was Win98se so I'm not certain if your version is the same.
I didn't have a lot of time but did the install twice. I just wanted to let you know that the R72429 did get me sound on the 2400. (Not recommending it now just noting it.) You have your video, chipset and ethernet drivers readily available so it shouldn't be a huge deal.
You have done so many driver related actions maybe a fresh install would be an option if you run into a wall with this. I seem to remember that under Win98 a simple driver problem often ended up requiring a reinstall to get things cleared up. There is one more older version, R61449, of the audio driver file for your HD ID there under my original Dell link (I doubt it would be much different since this one seems to install OK, but just making a note of it). Just a couple of thoughts I had that I will just mention before I forget. Maybe it is something more fundamental than just the audio drivers (although they are obviously troublesome too) such as the system.ini line. (I think using the card you still had nothing in Multimedia properties, so this may be one step ahead). I was thinking about this last night and you basically had one of your sound cards installed with similar listings and still got no sound. I also tried using DOSBox, but you really need to be a DOS guru for that software, and that I'm not. On a side note, I have tried running Win98SE in vmware player and Microsoft vm, and neither were successful. If anyone has any suggestions it would be much appreciated.
I used to use for drivers, and it used to be a pretty good resource for hard to find drivers, but their site is so loaded with ads, and now they want you pay for a manufacturer driver that may or may not work. I would still be willing to use the onboard sound if I can find a compatible driver. I'm pretty much at my wits end with this. I was able to get the SB AWE64D to install, once, with no conflicts, but still had no sound, and there wasn't a recognised audio device in the Multimedia properties, so even though it was installed, for whatever reason the O/S wasn't seeing it. a SB AWE64D, an Ensoniq PCIAudio, SB Live CT4860, SB Live SB0100 and a Turtle Beach Santa Cruz. I have several, and was not able to find a driver that would install correctly. After putting in a days worth of searching and coming up empty, I decided to try disabling the onboard sound and putting in an aftermarket card. It seems I have a choice of three to search for, a ADI 198x, a Sound Blaster 24 bit or a Sound Blaster Live. But my problem as been the integrated sound driver. With a little searching, I was also able to find a Broadcom driver. I was able to get a Win98SE compatible driver for the chipset from the Intel site, and with a little tweaking, I can get the video in the device manager to be conflict free. The mobo has integrated vga video, sound and networking. From the Dell site I was able to find out the chipset used, which is an Intel 845GV.
This pc did have XP Home installed on it, and that's what it was made for, but I was hoping to be able to find Win98SE drivers that would be compatible. I acquired a 9 yr old pc the other week, in the hopes of putting together a box that I could run Win98SE so I can play my old games that will not run on XP.