As we’ve mentioned above, you may have recently replaced or upgraded the RAM. If your MacBook Air or Pro beeps 3 times in a row at five-second intervals, it is the signal that the RAM didn’t pass the data integrity check (in other words - the RAM couldn’t load correctly). The leading cause of firmware issues is a power failure or problems during the macOS updates.Ī series of 3 beeps at a startup means your MacBook is signaling that the operating system you’re about to boot into is incompatible or that it can’t recognize some hardware on your Mac. It means that the firmware fails to be installed correctly. Sometimes 3 long beeps may be followed by 3 short beeps. Physical damage: you’ve accidentally hit or dropped your Mac.RAM issues: the RAM hasn’t been properly inserted or replaced.Here are the two most typical reasons for MacBook beeping 3 times at startup: In case of memory or firmware-related conditions, your MacBook may beep once or more times during the startup process. Why Does Your MacBook Beep Three Times?.
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