I can no longer start Mac by pressing the power button.
I am using a Mac Pro 2009 (OpenCore+macOS12).I tried to change video card from RX580 4GB to RX570 8GB. Immediately I tried to install it. But I could not push it in about 10mm left against the slot. I successfully inserted it and tried to boot Mac, but it would not turn on.
The Mac began to energize when I pressed the power button and immediately turned off. I then did an SMC reset and the power would continue to energize without powering down. The white LED above the power button is not lit at this time. I also pressed the reset switch on the logic board, but still could not remedy the problem.
I have removed all memory, SSD/HDD, PCI cards, etc., but that didn't help either. I changed the video card to a GT120 and still could not boot. The display shows a guide with the expression "Please check the connection" instead of "Please connect the cable.
Where are the factors preventing Mac from starting up?
I am using a Mac Pro 2009 (OpenCore+macOS12).I tried to change video card from RX580 4GB to RX570 8GB. Immediately I tried to install it. But I could not push it in about 10mm left against the slot. I successfully inserted it and tried to boot Mac, but it would not turn on.
The Mac began to energize when I pressed the power button and immediately turned off. I then did an SMC reset and the power would continue to energize without powering down. The white LED above the power button is not lit at this time. I also pressed the reset switch on the logic board, but still could not remedy the problem.
I have removed all memory, SSD/HDD, PCI cards, etc., but that didn't help either. I changed the video card to a GT120 and still could not boot. The display shows a guide with the expression "Please check the connection" instead of "Please connect the cable.
Where are the factors preventing Mac from starting up?