Guest /u/trinitropt Posted August 27, 2024 Posted August 27, 2024 Hi, I don’t know if this is the right place to ask for help but I recently got my hands on a Mac Pro 3,1 that is not booting. When I press the power button the white led stays steady and the fans start. I don’t know almost anything about this computer, other than the fact that this unit may have been diagnosed with a bad power supply, but it’s not guaranteed. I haven’t been able to discover which CPU’s it has but it had two graphics cards inside, one nvidea GeForce 750 (2gb), and one nvidea 8800gt. I think it may also be important to mention it didn’t came with any disk, (hdd or ssd), and that all of the ram slots are full. I have been reading the manual and trying to diagnose it using the led’s on the board, when the button is NOT pressed: SLP - off STBY - off ERRB - red ERRA - off OT B - off OT A - off GPU - off PWRG - off EFI - off when the button is pressed: SLP - off STBY - yellow ERRB - red ERRA - off OT B - off OT A - off GPU - green PWRG - green EFI - off I have also pressed the reset switch but nothing happens. The computer does not show any video in any of the graphics cards even when i take one off, and I have verified the voltage of the motherboard and everything seems good (3.00 V) I have tried to see if it would show anything when a disk with El Capitan taken from a working MacBook 2009. I you happen to know something about this please give me a hint! Thank you very much for your time! submitted by /u/trinitropt [link] [comments]
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