MacBook Pro done three short beeps and a pause.

MacBook Pro made three short tones beeps and flashes the power on light then made a break of approximately at the same time it does beep. What it repeats. I stopped it by cutting off all the external references and by pressing the switch for about 10 seconds. Any thoughts?

It turns out that I must have accidentally open the clip of RAM when I upgraded my HD up to 1 TB. High memory was loose and tilt. Carefully, I removed the memory and then reinserted it. Back to functional without beep.

Tags: Mac OS & System Software

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