MacBook Pro weird issues with screen and beeping

Discussion in 'MacBook Pro' started by marcxyz, Apr 6, 2018.

  1. marcxyz macrumors newbie


    Apr 6, 2018
    Hi all,

    I've been having some issues with my mid-2012 MacBook Pro (A1278) which I just don't know how to solve. I have recently formatted my whole HDD and installed a fresh copy of macOS, which has made my MBP run like the first day I bought it, but these issues persist, which I am guessing are hardware related. Apple diagnostics showed no hardware issues at all.

    One of the issues is that the laptop freezes from time to time, and the screen goes crazy, like you can see on the screenshot. This seems to happen mostly at the moment I place my MBP on top of a desk (while it is on), so basically when any sort of contact occurs, however careful I try to be.

    The second issue is, a very loud beeping comes from the laptop, again it seems to me it happens when it is on and I am placing it on top of a desk.

    Could this be the RAM getting lose and the laptop going crazy whenever I move it? Or is it something more difficult/pricier to fix?

    Attached Files:

  2. duervo macrumors 68020


    Feb 5, 2011
    Could be RAM or the RAM slot. That’s what the beeping part suggests to me. Not sure it would be doing any beeping if it was the display cable, display connector on the logic board, or the display itself.

    I can see it’s a 13” system in your screenshot, so it’s got nothing to do with a dGPU as it doesn’t have one.

    Run Apple Diagnostics through a full test (if it still happens after re-seating the RAM.)
  3. jerryk macrumors 601

    Nov 3, 2011
    SF Bay Area
  4. marcxyz thread starter macrumors newbie


    Apr 6, 2018
    Thanks guys, will definitely try to reset the RAM to see if that does the trick.

    @jerryk, battery is indeed over the cycle limit (1136) but that should only mean it doesn't last as long as it did before, which it doesn't, but shouldn't cause any other problem, I hope?
  5. jerryk macrumors 601

    Nov 3, 2011
    SF Bay Area
    When the battery gets old they can expand dramatically as gas builds up inside. In some cases bulging to 1.5 times or more in size. This puts pressure on internal components nearby like the main board, keyboard, trackpad, etc. This expansion can get to point where it starts deforming the aluminum case, cracking the trackpad glass, etc. And then there is the issue with a battery fire like the Samsung Galaxy 7 Note.

    Bottom line is you should inspect the system. or have a shop inspect it. And I always recommend replacing a battery when it is past it's useful cycle count.
  6. marcxyz thread starter macrumors newbie


    Apr 6, 2018
    That is immensely helpful, definitely appreciate it. I think that's enough to convince me to spend a bit to upgrade the battery and avoid further problems down the line, hopefully the other problem is just a question of resetting the RAM cos other than that it just works like a charm, would be a shame if it was a bigger problem.
  7. _Kiki_, Apr 7, 2018
    Last edited: Apr 7, 2018

    _Kiki_ macrumors 6502a

    Aug 13, 2017
    doesn't look like problem with the battery, more like the logic board is falling down, can be also the problem with screen
  8. ecsos macrumors newbie


    Feb 6, 2014
  9. jerryk macrumors 601

    Nov 3, 2011
    SF Bay Area
    Reseating the RAM is cheap ($0 if you do it yourself) and easy. Best of luck. You have the last MBP that the end user could easily maintain and upgrade themselves.
  10. Fishrrman, Apr 8, 2018
    Last edited: Apr 8, 2018

    Fishrrman macrumors P6


    Feb 20, 2009
    If you get "3 beeps in a row" -- that's an indication of "RAM troubles".

    I think that it could be:
    - RAM slot -- intermittent contact from back of case "pressing on" the topmost RAM DIMM (that's why you see it act up when you set it on a surface)
    - Also, the SATA ribbon cable that connects the internal hard drive to the motherboard (it's a "known weak" component on the 2012-design non-retina MBP's). The cable "wears" the internal connections go bad, or sometimes it even "shorts out" against the back cover. Although this doesn't sound like a problem that would give you "the three beeps".

    Do you have a brick n mortar Apple Store anywhere close?
    Apple -used to have- a free replacement program for the ribbon cable in the 2012 MBP's.
    I'm not sure if it's still in effect.
    Might be worth taking it in an having it replaced.
    They could also check the RAM as well.

    With the RAM, you might
    - take off the back cover (you need a Phillips #00 driver for the screws, and pay attention to where "the long screws" go).
    - gently remove the RAM. Clean off the contacts, then reseat the RAM back into the DIMM slots.
    Put the back on and see if that changes anything.

    If you're STILL getting the display problems
    - Take off the back
    - Remove the RAM DIMM "nearest to you" (topmost slot with back off). Leave it "out" for now.
    - Put the back on.
    - Try to boot and run that way a day or two.
    Do you still have the same problems?

    If taking out the upper RAM makes the computer "run as it should", then what I would do is:
    - Buy an 8gb DIMM and put it in "the BOTTOM slot" (with the back off)
    - Leave the top slot "empty".

    If that works, just leave the bad RAM slot empty, and go with "what works".
  11. thekev macrumors 604


    Aug 5, 2010
    This doesn't necessarily show up under battery health. If the battery is swelling and it's not a retina model, it's quite accessible. You can always open the back and check for signs of swelling, which need not relate to reported battery health. That just tells you percentage of initial capacity.

    It's harder to access anything on the retina models, and ram is no longer in dimm form.
  12. TheSkywalker77 macrumors 6502a


    Sep 9, 2017
    It might be the RAM. It came lose in my computer and there was a beeping with it. As for the screen, I don't know the answer for that.

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