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I have power mac g5 (2003), it is 2.0GHZ dual processor and running 10.5.8, some time boot up, but some time can’t boot up. I try use the Install CD/DVD that came with my system to boot up , I got same result some time it boot up, some time can’t boot up. please help me and let me know why?
There are diagnostic lights on the logic board please take a look at them and tell us what they are showing. Location Name Color Status Indicates LED 1 Yellow On Yes Power supply is providing trickle power LED 2 Red Off No CPU B halts on an IERR (instruction error) LED 3 Red Off No CPU A halts on an IERR (instruction error) LED 4 Red Off No CPU B is over temperature LED 5 Red Off No CPU A is over temperature LED 6 Green On Yes EFI has configured the graphics card LED 7 Power on Green On Yes All power rails are functioning LED 8 EFI done Green On Yes EFI is done loading GPU present CPU A (lower processor) Overtemp CPU B (lower processor) Overtemp CPU A (upper processor) Error CPU B (lower processor) Error Trickle power LED Button to Display 436 Troubleshooting a Mac Pro
I’m having the same issues on my A1186, it says “ERRA” on the mother diagnostic but doesn’t post, I tried taking out the clock battery and placing it back in and I’ve hit the reset button ontop of replacing both the processors. Am I missing something or do I need to install the OS for it to boot?
