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Level 1

28 points

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

174 replies

Dec 10, 2016 9:13 AM in response to igbee

Is this solution still working for you more than a year later?

asb6

Level 1

8 points

Dec 16, 2016 8:55 AM in response to igbee

Yes - I have now had all these 3 problems as well! Replaced SATA cable and Hard Drive already. The glitch-restart-beep issue has cropped up now. Trying to solve it with recommendations here of using only the top slot. Lets see how it goes.

EricSo

Level 1

4 points

Dec 18, 2016 1:02 AM in response to ashlyn7371

I had all those problem as everyone at here as well. What I did is remove one ram which is close to the keyboard, and I can reboot it without 3 beeps sound. However, I can only use it on a flat surface, which mean i can't use it on my lap. If there are any pressure that applied to the bottom of the MacBook Pro, the screen display will glitches.

I think MacBook Pro(mid 2012) should include in the following program.

http://www.apple.com/support/macbookpro-videoissues/

Apple has determined that a small percentage of MacBook Pro systems may exhibit distorted video, no video, or unexpected system restarts. These MacBook Pro systems were sold between February 2011 and December 2013.

Apple or an Apple Authorized Service Provider will repair affected MacBook Pro systems, free of charge. See below for details on affected models and service options.

Symptoms

An affected MacBook Pro may display one or more of the following symptoms:

Distorted or scrambled video on the computer screen
No video on the computer screen (or external display) even though the computer is on
Computer restarts unexpectedly

Affected Models

MacBook Pro (15-inch Early 2011)
MacBook Pro (15-inch, Late 2011)
MacBook Pro (Retina, 15-inch, Mid 2012)
MacBook Pro (17-inch Early 2011)
MacBook Pro (17-inch Late 2011)
MacBook Pro (Retina, 15 inch, Early 2013) "

Dec 18, 2016 1:36 PM in response to EricSo

Well, to answer my own question. One full week of having ONLY the top slot occupied (I have an 8G DIMM on the way so I can go back to 8G, but for most of what I do, 4G is really pretty fine).

Not only hasn't the computer crashed. I can not MAKE it crash at ALL.

THIS is LIVING.

Feb 26, 2017 8:59 PM in response to ashlyn7371

Hi Ashlyn,

I am havin the same glitch issues and shutdowns. Were you able to figure out something with that!?

Thanks,

Mar 21, 2017 3:59 AM in response to peterhamm

What?

at the moment i removed the RAM and it all working fine now. In the future i would like to upgrade that one RAM slot to 8GB (instead of the current 2GB)

Do this also mess it up?

Csound1

Level 9

59,985 points

Apr 3, 2017 6:12 AM in response to peterhamm

So, what do you suggest?

Csound1

Level 9

59,985 points

Apr 3, 2017 6:37 AM in response to peterhamm

An OS reinstall is probably the simplest thing you can do, not difficult in the slightest. The Mac will run on one RAM chip indefinitely if you choose, just put a big one in there. 8GB works well.