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Apple Computing Products:
macOS - Operating System
Worse than a blue screen
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<blockquote data-quote="dtravis7" data-source="post: 1307196" data-attributes="member: 8287"><p>Never seen EFI do anything like that. Since you can't see anything but that pattern, I know of no way to reset it.</p><p></p><p>What bugs me is the machine worked fine before the hard drive was installed. Try taking out the drive and then powering on. Does that screen still show up?</p><p></p><p>Do you have an external hard drive you could plug in when the internal out? Just trying to see what went wrong.</p></blockquote><p></p>
[QUOTE="dtravis7, post: 1307196, member: 8287"] Never seen EFI do anything like that. Since you can't see anything but that pattern, I know of no way to reset it. What bugs me is the machine worked fine before the hard drive was installed. Try taking out the drive and then powering on. Does that screen still show up? Do you have an external hard drive you could plug in when the internal out? Just trying to see what went wrong. [/QUOTE]
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Apple Computing Products:
macOS - Operating System
Worse than a blue screen
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