I recently swapped my hard drive for an SSD and my fan is working fine but whenever I shutdown my computer it starts going full blast. I won’t stop until I disconnect the power cord. It's an old iMac a1418. I read the SSD is incompatible with this model's temperature sensor so I put back my old hard drive. The fan still runs when I shut my computer off. What's going on?
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@John Pham - You can thank Apple for messing up the systems EFI code!
At this point I think you'll need to visit someone with iMac repair experience as they will need to use other diagnostic tools to figure out whats happening here.
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Restart your system and press the D key to enter into diagnostics. Let us know what the errors you get.
Reference: Mac startup key combinations
由 Dan 完成的
it says cannot load 'EFI/Drivers/TestSupport.efi'
Error: 0x800000000000003
由 John Pham 完成的