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Apple Computing Products:
macOS - Desktop Hardware
3 beeps on start up
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<blockquote data-quote="rman" data-source="post: 457118" data-attributes="member: 23"><p>1 beep = no RAM installed</p><p>2 beeps = incompatible RAM types</p><p>3 beeps = no good banks</p><p>4 beeps = no good boot images in the boot ROM (and/or bad sys config block)</p><p>5 beeps = processor is not usable</p></blockquote><p></p>
[QUOTE="rman, post: 457118, member: 23"] 1 beep = no RAM installed 2 beeps = incompatible RAM types 3 beeps = no good banks 4 beeps = no good boot images in the boot ROM (and/or bad sys config block) 5 beeps = processor is not usable [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
3 beeps on start up
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