Rebooting your Mac may resolve the issue otherwise, replacing the Random Access Memory (RAM) might be better. The proper fix is known after troubleshooting. Your device attempts to resolve this issue and will likely startup after completion. The will arise if the firmware fails to install correctly. You may encounter the MacBook beeping 3 times alternating between long and short sounds. Thus, the failure of the device to complete an integrity check triggers the beeps. This component could be damaged or out of place. A 3-beep sound within a 5-second interval proves a RAM-related issue within your MacBook Air or MacBook Pro. There are two kinds of beeps you may hear. Identifying the kind of beeps is the first step in resolving this problem. Is your MacBook beeping 3 times and won’t turn on? it signals that you might be facing hardware-related issues. A looping three beeps in between three seconds during startup is your iMac’s way of telling you that the operating system you’re trying to boot into is incompatible with your Mac hardware.If you buy through affiliate links, we may earn a commission at no extra cost to you.

A last dark horse that could cause this triple beeping is a strange bug while running Google Drive software on a Macintosh running 10.6 (Snow Leopard). If you meet this last condition, either deinstall Google Drive or upgrade your Macintosh operating system.

3 beeps usually means that memory modules may not be seated properly or not working properly. If you do not want to check it yourself, you can take the computer to the Apple store to have it fixed. I keep my laptop running most of the time, and at 4 o'clock this morning it started beeping at me. Talk about a rude awakening! The screen was dark and did not respond to keys or mouse clicks. I pressed the power button until it was quiet. Intel Mac :: Turns On But Just Beeps Three Times Stops Beeps More Times And Won't Start Up I waited ten minutes and did some quick research on my ipod. My Macbook Pro battery had run down (it does quite a bit) so I rebooted with the power inserted. I get a frozen screen saver which is normal, while the progress bar finds it feet back on power. However this time, I had the frozen screen saver, and a continuous 3 beeps which I've never had before in a loop? I then re-pressed the power switch on the Macbook and it rebooted fine and seems ok.

Macbook pro 3 beeps startup