Macbook Pro screen glitches, 3 beeps, NOT THE RAM

My Macbook pro has been having screen glitches randomly with lines appearing on the screen and then it suddenly shuts down. Sometimes It beeps 3 times (what everyone claims is a ram issue) and sometimes it does not beep and will just start right back up again. I'm currently using it right now and it seems to be okay but this is always the case. It works fine and then all the sudden it glitches and shuts down. I


I have had the Ram replaced TWICE and have had the ram readjusted in case it has fallen out of place. my computer has passed every hardware test imaginable. Sometimes when I scroll on safari, chrome or anywhere (when its working) the screen glitches and lags really bad. MY computer is literally unusable. I am in nursing school and my computer is vital PLEASE someone help me!!!!


Here is just some details and extra info about what I've tried and researched:

I am currently using it in "safe boot" mode and I turned the SMS (sudden motion sensor) off.

I have done so much research on this issue here is what I have found thus far, obviously the ram issue, A GPU issue, A logic board issue (lets pray its not), a battery issue or a issue with Mavericks. Could it be something I downloaded?


Mac details:

13 Inch MacBook Pro Mid 2012

Processor: 2.5 GHz Intel Core i5

Memory: 4GB 1600 MHz DDR3

Version: 10.9.1

Graphics Intel HD Graphics 4000 1024 MB


This is what it says under SYSTEM INFORMATION Hardware>Memory.Memory Slots:


ECC: Disabled

BANK 0 / DIMM0

Size:2GB

Type:DDR3

Speed:1600MHz

Status:OK

Manufacturer: 0X02FE

Part Number:0x45424A3230554638424455302D474E2D4620


then it has BANK 1/DIMM0 and basically says the same thing

MacBook Pro, OS X Mavericks (10.9.1), SOMEONE PLEASE PLEASE PLEASE HELP

Posted on Aug 5, 2014 3:32 PM

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Posted on Dec 31, 2017 8:38 AM

I had the same problem (3 beeps, horizontal colored lines) with my 13" MacBook Pro (A1278 mid-2012) and it manifested itself a few minutes, sometimes an hour, after the computer was turned on. Then, after it happened once, it would restart, and then happen again right away.


I tried replacing the RAM, I tried switching the RAM around in the different slots in various combinations. Then, it came down to me replacing the logic board. I ordered the right part online (661-6159), I followed all the instructions step-by-step (MacBook Pro 13" Unibody Mid 2012 Logic Board Replacement - iFixit). Meanwhile, I noticed a ton of dust in the fan vent and under the logic board, so I cleaned all of that up. Also, I noticed that on the original part, there was basically no thermal paste left between the copper heat sink and the processor. When I tried to turn on the MacBook, nothing happened. I think the part was DOA, so I am sending that back for a refund now. Then, it occurred to me that the issue might actually be due to the MacBook overheating. I cleaned up all the crusted thermal paste, removed all the caked-on dust from underneath the logic board, in the fan and in the heat sink venting slots. I put everything back together with a fresh layer of thermal paste, closed everything up, and.... like magic, everything works now.User uploaded file

174 replies

Oct 1, 2015 7:58 AM in response to igbee

Took mine into genus bar. They said in most cases it was the logic board but it could also that the RAM needs to be reseated. Flat rate repair for the logic board is the best option ($280 for me). I'm not happy about it because it's basically the same issue as the recall program for the other Macbook Pro's but what can you do...


I've had supreme bad luck with apple products lately.

Oct 1, 2015 8:37 AM in response to ashlyn7371

I too had to take out the bottom RAM stick and now my MBP seems to be working as if there is nothing wrong at all. What I found weird is that when I had 2 RAM sticks in the laptop would malfunction when I would pick it up, and now with only one RAM stick it doesn't do anything. Also when both RAM ports were being used I would occasionally get the freeze and restart. So based off of everyone else complaints and my experimenting with mine, it is clear to me that there is an issue with the RAM connection to the logic board, something has come loose or undone. It's obvious that the issue is way bigger now and Apple should certainly offer a recall or a discounted repair.

Oct 1, 2015 9:45 AM in response to halfnyce07

i plan to do a few tests soon.

1: Swap in the other piece of ram that I am now not using. To see if it was working properly. (I reckon it was though)

If it is o.k. then.

2: I will place the ram in the bottom slot only and see how it goes.

If that is o.k. then.

3: I will put the 2 pieces of ram back in but i will get an piece of insulated plastic of some sort to go in-between them to make sure they don't touch.


This will answer a few questions for me.

Oct 4, 2015 11:00 PM in response to ashlyn7371

I am having the same problems with my MacbookPro from Fall 2011, and it is so incredibly frustrating. My laptop suddenly and randomly shuts down--up to 15 times a day, with the lovely 3-beep sound. Sometimes the shutdowns dealt with pressure (e.g. lifting my laptop off from the bottom), other times, it would completely shutdown for no apparent reason.


I brought it to the Genius Bar, and it passed all of the extensive testing that they can possibly perform. They told me that "it's functioning as if it's new", but yet the problem persists. It actually became worse when I brought it home that day--now my laptop won't even start up.


I am relieved that I found relevant and recent users who share the same problem--because the workers at the Genius bar seem to not believe me when I say that my MBP isn't working (but I'm NOT relieved that this problem exists!!!). How should I solve this??? Maybe I will try taking our the RAM. Do you suggest I do the flat rate $310....would they even be able to fix it...if the folks at the Genius bar can't identify the problem in the first place?

Oct 5, 2015 2:18 AM in response to neilcol

So after doing a few tests here is my conclusion.

both pieces of ram are fine.

3 beeps of death when either piece of ram was in the problem slot. This is the piece closest to the keyboard. So when back is opened it is the bottom slot.

1 piece of ram in again in top slot. MBP going again.

My Conclusion is that the connection between logic board and ram slot is faulty. So this is the reason that Apple replace a full logic board.

Serious fault with them if so many have this problem.

MY short term solution now is too upgrade ram to a bigger size and hope for the best.

Hopefully the top ram slot doesn't fail anytime soon.

Overall this is poor from Apple. Obviously a design fault that we pick up the bill for???

Oct 8, 2015 1:20 PM in response to neilcol

Thanks neilcol. Will give it a try with bottom slot empty... (after trying nearly all possible solutions; replaced disk drive, replaced ram, did smc and pram reset, osx upgrade) Strangely, hardware diagnostic test and memtest reported no issues.. Just hope this one works.


Apple should recognize this problem, include 13" mid-2012 MBP's to Apple Repair Extension Program and replace faulty logic boards.

Oct 20, 2015 11:19 AM in response to neilcol

Did a search of this issue today after having this problem for the last 3 months. Same screen issue going crazy when picking up my laptop (works fine when sitting on a table) and then it freezes and then turns off. This morning was the first time it had not turned back on and got the 3 beeps with silence then 3 more beeps. Even though I'm bummed others are having the same issue I'm glad to know I can point the Genius Bar to this thread at my appointment later this week. Mid 2012 MBP 13'' with Qty 2 4GB sticks for a total of 8 GB. I had to replace the battery in the machine last year and replace the frayed power cable. Very odd experience so far with this machine. Of course it is out of warranty too.

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Macbook Pro screen glitches, 3 beeps, NOT THE RAM

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