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Apple Computing Products:
macOS - Desktop Hardware
imac hangs after chord, grey screen of death
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<blockquote data-quote="chscag" data-source="post: 1370068" data-attributes="member: 46727"><p>The Apple sound (chime, not chord) tells us that the machine passed POST, it does not indicate that the hard drive passed testing. That's an entirely different procedure which must be done using software or the built in Disk Utility.</p><p></p><p>It does sound like your hard drive may be failing or has already failed. I know you said you tried other ways to boot, however, sometimes a failed internal hard drive will prevent the system from booting even from an external source.</p><p></p><p>You probably need to make an appointment with your local Apple store and have them check it out. Removing and replacing a hard drive in an iMac is not an easy task and requires some special tools.</p></blockquote><p></p>
[QUOTE="chscag, post: 1370068, member: 46727"] The Apple sound (chime, not chord) tells us that the machine passed POST, it does not indicate that the hard drive passed testing. That's an entirely different procedure which must be done using software or the built in Disk Utility. It does sound like your hard drive may be failing or has already failed. I know you said you tried other ways to boot, however, sometimes a failed internal hard drive will prevent the system from booting even from an external source. You probably need to make an appointment with your local Apple store and have them check it out. Removing and replacing a hard drive in an iMac is not an easy task and requires some special tools. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
imac hangs after chord, grey screen of death
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