While you have the RAM out take a photo of the label, it should say how many GB each chip is and what type i.e. I could not describe it better than this iFixIt guide: If that’s the cause, you’d have to take it in and have an Apple (or Apple-authorized) technician look at it.There could be a large number of issues, but as you've said it could be the RAM chips, we should start with the possibility that the RAM has become loose, you should try reseating the RAM. If that’s the cause, you might be able to fix it by following the directions under “Resetting PRAM and NVRAM” in this Apple tech note:Īnother idea is that there might be a loose connection somewhere inside the MacBook that’s preventing the power button from working properly.

If that’s the cause, you could push the RAM in more tightly as described in this post.Īnother possibility is that a certain area of your Mac’s memory (different from RAM) might need to be reset. That might explain why it used to be fine before, but not now. One possibility is that the RAM modules inside the computer have gotten loose.

Hi veron, I’m not sure if that’s the same problem talked about in this post, but I’ll try to think of some possibilities.

However, it won’t work with a MacBook Air or a MacBook Pro with Retina Display, because on those models the RAM is permanently soldered to the motherboard.) (Update: It seems like this applies to newer Macs such as the unibody aluminum MacBook Pro line and the iMac, although I haven’t tried it myself. I wasn’t able to find a tech note at the Apple site about this, and that’s why this entry exists. The levers are only for popping out the RAM, not inserting it. If your MacBook has metal levers near the RAM, don’t use the levers to do this. You may have to push harder than you think is normal, but seriously, you have to push pretty hard. I thought I had pushed the RAM modules far enough into their slots, but after the MacBook failed to start up I took another look and found out that you really do have to push firmly and carefully past some initial resistance until the RAM goes in all the way. I found this out when re-seating the RAM of a friend’s MacBook to try and fix a problem. If you turn on a MacBook when it’s completely powered off (not sleeping), and instead of starting up, the screen remains dark and the sleep light is blinking, the MacBook’s RAM might not be installed properly or might have worked loose.

2009 macbook pro 3 beeps after sitting