Why does my MacBook beep 3 times when I turn it on? But once you tap this button, the volume menu will expand. To resolve a firmware issue, your Mac is restoring its firmware.ĭisabling the Startup Sound Then, look for a menu button on the virtual volume slider that appears on your screen - sometimes it will be three dots, other times it might be a gear icon or a set of switches. Three long beeps, three short, then three long.The memory in your Mac didn’t pass an integrity check. Three beeps, then a 5-second pause, repeating.Your Mac isn’t detecting any memory (RAM). What do I do when my MacBook starts beeping? Hold the keys down until the computer restarts and you hear the startup sound for the second time. You must press this key combination before the gray screen appears. Press and hold the Command-Option-P-R keys. If you can’t start your computer properly, you’ll need to take a look at the physical hardware inside your machine. One long, continuous beep generally means that there is a hardware problem – often memory related – that can prevent your computer from starting up at all.

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?

Macbook pro 3 beeps after startup chime