Hold these keys and the power button for 10 seconds. 2 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. In the Sound Effects pane, use the “Play sound on startup” setting to turn the startup sound on or off. How do I permanently turn off startup sound on Mac?Ĭhoose Apple menu > System Preferences, then click Sound. Either your computer’s memory was removed or something is interfering with the system checkup. If you hear this pattern of beeping, it means that the Mac could not find any RAM installed. When you start your Mac, it will automatically run system diagnostics. Guidelines Why is my Mac making a beeping noise? Why is my Mac making a beeping noise?
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