Hello, new member, long time reader, first post, and hopefully in the right sub-forum.

I've got a Gateway 2000, and have used it off an on for several years. I decided recently that I wanted to make some upgrades to it. It came with the original ATI Mach64 VGA card (PCI), but I wanted to upgrade as it was having some issues playing MPEG files, and problems with some DOS games. To be clear, it works perfectly, but doesn't appear to have enough memory to properly display video, and the resolution is smaller that I would like. This card is a known working card.

So, I grabbed a card that I had on hand, a WDC-93 ISA card with 1mb of memory. This card works ok, no problems. But I was looking for something with a little more memory (but strangely this card fixes the video issues noted above, but has a problem where in the graphics may not display properly upon startup. But when rebooted, it seems to work fine), so I decided to try out another PCI card, this time an S3 Trio64.

Now, before I go any further, I did make a few changes to the bios. I have installed a larger HDD (80gb) using On Drive to patch the bios after initialization. This patch is not applied until after the computer should have initialize the Video Card. Installed 5.25" 1.2mb Floppy, and adjusted the setting in the Bios. But other than that, everything is about the same as far as I can tell, I did try resetting the bios several times by removing the coin cell to attempt to fix the problem detailed below. I also used the jumper block to manually clear it.

Here is where the problems start. Upon trying out the S3 Trio64 card, the computer won't post it. 1 Long, 2 short beeps, and no video on the screen. So, I put my WDC-93 card back into the computer (with the S3 card in it as well), it boots up properly into Win95, where it detects the S3 card, and prompts for the Win95 disk to install the drivers. Puzzling, but ok. I then try out a ATI 3D Rage II card. When booted with just the 3D Rage card, the same as with the S3, 1 Long, 2 Short beeps. Then, I go back to the known working card, the Mach64, plug it into the computer, and no luck. Same 1 Long, 2 Short beeps.

Other than with the VGA cards, the PCI bus appears to be working fine. Ethernet card works. And as mentioned before, the cards are made visable to Windows.

The computer does have the Jumper Switch Block, with the following options:
1 ISASPD - ON-1/4 OFF-1/3
2 PROC - ON-V2 OFF-V1
3 PASSWD - ON-En OFF-Dis
4 CMOS - ON-CLR OFF-NORM
5 SETUP - ON-DIS OFF-EN
6 BF - ON-1/2 OFF-2/3
7 - Not Shown on MB
8 - Not Shown on MB

Also there is a 6-pin jumper block with one side labeled RCVR (with pins 2-3 shorted), and the other side labeled J1K1.

It is worth noting that other than clearing the BIOS, no switched has been moved.

I have tried adjusting the PCI latency from 66 (factory default) to 64, and even 32 at one point. But it has not made any change. The computer does not post any PCI card (at least none that I have), but PCI does seem to be working fine. Any clues as to what could be causing this?