

Hold the keys down until the computer restarts and you hear the startup sound for the second time.Ħ. If you recently dropped the machine you may have knocked it loose. These are not the same as the startup sound (chime) that a Mac can play when starting up normally. On some Mac models, you may hear one of these beep sequences at the beginning of the startup process, while the screen is still blank. Press and hold the Command-Option-P-R keys.ĥ. Certain conditions related to memory or firmware may cause your Mac to beep once or more during startup. You will need to hold these keys down simultaneously in step 4.ģ. Locate the following keys on the keyboard: Command, Option, P, and R. Hold these keys and the power button for 10 seconds.ģ If you have a MacBook Pro with Touch ID, the Touch ID button is also the power button.ĥ Press the power button again to turn on your Mac.
Macbook pro 3 beeps help how to#
How to fix MacBook beeping 3 times Try resetting the SMC Ģ After your Mac shuts down, press Shift-Control-Option on the left side of the built-in keyboard, then press the power button at the same time.
Macbook pro 3 beeps help professional#
If the problem persists, visit an Apple professional immediately or contact Apple Support directly.

You may have recently replaced or just upgraded the RAM memory on your MacBook Air or MacBook Pro computer and it was not installed properly. If your MacBook Air or MacBook Pro computer is broadcasting 3 successive beeps at intervals of approximately five seconds, it means that RAM memory did not pass the data integrity check. The beeping indicates that there is an issue with your notebook’s RAM. Why MacBook beeping 3 times and won’t startup?
