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Apple Computing Products:
macOS - Desktop Hardware
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<blockquote data-quote="chas_m" data-source="post: 1036466"><p>Your Mac came with Apple Hardware test on the restore DVD. Just insert the disc, restart the machine and hold the "D" key. Do the long test if you can spare the time (like overnight).</p></blockquote><p></p>
[QUOTE="chas_m, post: 1036466"] Your Mac came with Apple Hardware test on the restore DVD. Just insert the disc, restart the machine and hold the "D" key. Do the long test if you can spare the time (like overnight). [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
Grey screen with vertical lines
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