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Apple Computing Products:
macOS - Desktop Hardware
imac won't boot up
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<blockquote data-quote="cwa107" data-source="post: 1283801" data-attributes="member: 24098"><p>That doesn't sound right to me. Did you give it a solid, single press and then give it a second or two? I'm thinking it's possible that a "rapid fire" approach might put it into a turn on/turn off cycle that could exhibit this kind of behavior.</p><p></p><p>If that's not the case, I'd recommend resetting the SMC:</p><p></p><p><a href="http://support.apple.com/kb/ht3964" target="_blank">Intel-based Macs: Resetting the System Management Controller (SMC)</a></p><p></p><p>...and if that wasn't of help, I'd be taking it down to the Genius Bar if it were mine.</p><p></p><p>Another tip: Consider sleeping the iMac when you're not using it instead of shutting it down every time. OS X has a great sleep mode that draws very, very little power (far less than the amount of juice required to power a nightlight). This way, it will wake instantly and without the need to hit the power button at all.</p></blockquote><p></p>
[QUOTE="cwa107, post: 1283801, member: 24098"] That doesn't sound right to me. Did you give it a solid, single press and then give it a second or two? I'm thinking it's possible that a "rapid fire" approach might put it into a turn on/turn off cycle that could exhibit this kind of behavior. If that's not the case, I'd recommend resetting the SMC: [url=http://support.apple.com/kb/ht3964]Intel-based Macs: Resetting the System Management Controller (SMC)[/url] ...and if that wasn't of help, I'd be taking it down to the Genius Bar if it were mine. Another tip: Consider sleeping the iMac when you're not using it instead of shutting it down every time. OS X has a great sleep mode that draws very, very little power (far less than the amount of juice required to power a nightlight). This way, it will wake instantly and without the need to hit the power button at all. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
imac won't boot up
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