@pan1k
If the computer doesn't recognise ram on the Blizzard PPC, then try to reflash it.
I had a setup in for repair once, which didn't work correctly. The ram on the Blizzard PPC couldn't be seen, so the computer couldn't be used because of all the software installed quickly drained the 2 MB chip ram, and left the boot process hanging. A reflash cured it.
Seing that you tried another accelerator indicates that this isn't the problem though, so maybe faulty ram modules?