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So when I first acquired my PowerWave, it had some posting issues which were due to RAM, which were resolved quickly and the machine ran well. However, after decided to upgrade from the "fine" Mach64 with a Rage128 I had sitting around, things got weird: get a chime and then the screen gets a signal briefly, then nothing. not even a black screen, my monitor just says there's no signal. The machine wouldn't post at all, even after a board reset before powering back on. Tried pulling RAM, reseating the ROM, reseating and changing out CPU daughtercards. Nothing. I put the Mach64 and it immediately posts and boots right up. I upgrade/reinstall the ATi drivers, shutdown, replace with the Rage128, reset the board, power on, and after a few seconds it finally posts. Okay, fine, no harm done I guess. Time comes where I have to reset the PRAM. Upon doing so, I'm back to a black screen, no posting at all, nothing beyond the bong. Would the ROM on the PowerWave just see the Rage128 and not know what to make of it because it's too new? This all seems very odd. Just wondering if anyone has any advice or has had a similar experience. Edit: as an addendum, if it really is something about a contemporary (to a PowerMac 85/9500) that it needs as far as a graphics card, what would be a decent replacement for the Mach64? VRAM modules for them are nearly double what you can get a standalone card for.