Screen froze, purple lines, three beeps. Help!

Hi everybody. I have a MBP Mid-2012, I bought it 1 year ago. I upgraded from 2 to 8 GB (4 GB x 2 SODIMM), and everything flawless. But 2 days ago, my MBP started with this issue. The color lines suddenly appear, the mac freezes and reboot. Even with a little knock anywhere, the same happened again. I read somewhere it could be a memory issue because of the 3 beeps (I got 'em too), and a "temporal solution" was to use only one memory slot, the one closer to the cover. I did it so, and 10 hours later the issue seems to be gone. It's ridiculous to use just one memory slot, but up to now, it's the unique solution worked for me.

I took my MBP mid-2012 13" to the Genius bar. He unscrewed the back and picked up the RAM cards and put them back in. He told me that I could do this myself or just knock on the back because they may have been jostled.

The knocking hasn't seemed to help and I haven't tried taking the back off yet. It happens every couple of days and seems to be more and more frequent. I'm planning to use a dust blower to clean up in there and also replace the RAM cards. I don't know if this will work.

Someone mentioned the left command button. I believe the RAM was located underneath that. I think it may have to do with carrying it around.

I believe the problem is solved.

I bought 16 GB RAM (8x2) from crucial. They were a little tighter to replace than the sample videos online. Nevertheless, once they were in, I've had no problems. The price was great and the performance is double.

I did the same thing last week and it worked excellent!

I bought 16 GiB TAM (8x2) Corsair 1600 mhz and replaced the old ones.

Now I'm running El Captain and move my Mac to anywhere without worrying if any bump would freeze it.

I totally recommend the upgrade.

That's such good news! Same for me.

Was yours kind of tight going in? The videos made it seem so easy but it took me awhile to get a good fit for the RAM cards in the slot.

🙂

I had no problem fitting the cards in the slot... Well, at least nothing that I'd noticed.

Hi, very similar problem, my solution: change place between the memory cards.

I am running a MacBook Pro 13" Early 2011 i7 which until yesterday was unmodified since I bought it brand new in 2011. So, yesterday I:

-changed the hard drive to a new Samsung SSD 850 EVO 500GB (on which I had preinstalled El Capitan using usb/sata cable)

-changed the RAM to Corsair DDR 1333MHz 16 GB

-I booted up fine after the surgery and the mac recognized all new hardware.

-But, after 1 hour of use I got a similar freeze as previous screenshots and loud beeps.

-I force quitted and rebooted up fine, used the mac for another hour and the same thing happened again, this time I recognized that it was 3 beeps in interval.

-I read it could be the RAM. I rebooted in Option-D mode and did an extended diagnostic hardware test and found nothing.

-When the mac froze for the third time I turned him over and changed back to my old RAM. I used the mac for half a day with no freeze interruptions.

-Finally I once again tested to put back in the new RAM, but this time I changed the slot order.

-I fired up the mac and now it has worked for like 10 hours with no interruptions.

I believe when I first installed the new RAM maybe it did not fit perfectly which caused the crashes, when I changed the order of installation of the RAMs, maybe the fit was better (my simplest explanation) so now it works...

Thus, the solution was to switch the place of the RAMs and hopefully it will work fine now, I'l tell if the problem appears again...

🙂

Hi! Nice to know that it worked for you!

Let us know if it was fixed, indeed.

Yesterday, mine was rebooted out of nothing after I disconnected the magsafe and reconnect it.

Sometimes crazy things happens -.-

I Have MacBook Pro 13" mid 2012.

started to have same issues bout a month ago.

when I move mac, it gets fuzzy , freeze. Shut down .

when tried to restart , 3beeps.

went to apple genius and they replaced logic board. Rams,magsafe board for 280$.

after 8hours oc using repaired mac, the issues started again.

now , even without moving the mac, it suddenly gets fuzzy , freeze and shut down by itself.

Im going to take it back to apple . Very stressful . It's expensive and This shouldn't be happening

Hey, guys! I've got some news!

Early in this post I've said that my problem was solved, but last month I started getting those glitches again.

I decided to plug the two RAM memory cards, put the bottom cover and DO NOT place the screws.

Somehow, by doing this, I was able to move my Mac without worrying about the freezes.

So, check this option if you still getting errors.

My screws are a bit weird. They are acting like magnets... They attract each other when placed together.

Well, I'll try to replace them... Perhaps they are interfering on the electric circuit of the logic board.

This can explain why people change the logic board and still getting glitches and freezes...

Of course, this is my guess...

I bought a

I bought the very same RAM and I am now having the problem.