It means your Mac can’t detect RAM, that RAM modules have come loose, or that the RAM didn’t pass a system integrity check.

This is the most common cause of a Mac beeping at a startup. If your Mac’s beeping when it’s starting up, it may be telling you there is something wrong. In this article, we’ll explain what to do if you hear your Mac beeping three times at startup. Those other sounds are a series of beeps that indicate that something is wrong inside your Mac and that the problem could be serious. However, that chime isn’t the only possible sound your Mac may make at startup, and the others are not as welcome. So many of us love that sound that Apple brought it back in Big Sur, having abandoned it a few years earlier. There are a few sweeter sounds than Mac’s startup chime. But to help you do it all by yourself, we’ve gathered our best ideas and solutions below.įeatures described in this article refer to the MacPaw site version of CleanMyMac X. So here’s a tip for you: Download CleanMyMac to quickly solve some of the issues mentioned in this article.

Macbook pro 3 beeps loosen up screws