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Hello, Have the problem that my Mac Mini mid 2010 no longer starts. When I turn it on, the LED turns on and the fan runs, but the screen remains black. After a short time, the Mac Mini will start beeping 3x short 3x long 3x short. But what does that mean? On the Apple side, I only find 3x long 3x short 3x long which indicates an EFI update error, but mine beeps the other way round. What could that be?
Here’s what your beep codes mean in better detail Startup tones, EFI, and fixing failed firmware updates
