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Apple Computing Products:
macOS - Notebook Hardware
macbook won't shutdown, restart or go to sleep
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<blockquote data-quote="immdb" data-source="post: 359484" data-attributes="member: 1238"><p>I would start by resetting the PRAM.</p><p></p><p>Press the power button and immediately hold down the Command (Apple) key, Option key, P, and R keys simultaneously until you hear the startup sound a second time to reset the parameter RAM (PRAM).</p></blockquote><p></p>
[QUOTE="immdb, post: 359484, member: 1238"] I would start by resetting the PRAM. Press the power button and immediately hold down the Command (Apple) key, Option key, P, and R keys simultaneously until you hear the startup sound a second time to reset the parameter RAM (PRAM). [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
macbook won't shutdown, restart or go to sleep
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