I have a PowerMac G3 B&W with a 350MHz G4 chip. I overclocked this to 400MHz, and it's been running great for a while. I think the logic board just died, but I'm not sure if that's the part to blame. I get a startup chime, and then a grey or white screen. I can get into open firmware, but that's it. The computer wont boot from a CD. I got an error "DEFAULT CATCH ! code=300"
I tried reset-nvram, and reset-all, and it didn't help at all. I was hoping someone could tell me more ways to troubleshoot this, or tell me what part is dead before I spend a whole lot of money on a new logic board.
Thanks,
-John
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