G3 Minitower doesn't like 128mb and larger Memory

I have two G3 desktops, and both are maxed out with low-density(and low profile) 256mb PC-133 RAM for a total of 768mb.

I recently acquired a pair of Minitowers-one a regular, and the other a server. I haven't changed the memory out in the server(I've focused more on getting the hard drives set up how I wanted) but have been playing some with the RAM in the other minitower.

The previous owner had a installed 3x64mb high density PC-100 modules, and the computer works fine with these.

I went through my memory drawer, and initially started trying to install a single PC-133 256mb low density module in place of one of the 64mb. It would chime, but would not boot. I then switched over to low density PC-133 128mb sticks(I have a TON of these), and it still wouldn't boot. I'll also add that I was careful to only use non-ECC memory. The only way I can get it to boot is with the 64mb modules.

Any ideas about what could be going here? Am I just going to have to live with this computer having 192mb of RAM?

Thanks for the program suggestions.

With that said, I may not have made myself completely clear. Even if I only install a single 128mb and leave the other two 64s in place, it still won't boot.

At least one of the 64s currently installed is PC-133, so I don't think it's a timing issue.

jruschme said:

I wonder what DIMM First Aid http://www.mactcp.org.nz/dimmfirstaid.html would have to say about the memory.

Click to expand...

Unfortunately, utilities like that won't help me when the computer won't even boot!