Very Slow MBP

Discussion in 'MacBook Pro' started by Filmboy490, Apr 12, 2017.

  1. Filmboy490 macrumors newbie

    Filmboy490

    Joined:
    Apr 12, 2017
    #1
    I just flew from Brooklyn to Berlin and found a snafu using my laptop for a time-sensitive film project. En route in Dusseldorf, I experienced a distinct slow speed of my laptop to process simple commands like opening a folder or shutting down. It was running just fine until I opened the laptop again to continue writing a MSWord document, suddenly everything was slow and every click resulted in the cycling of the colored spindle. There was no special or extra bump on the laptop to cause problems. The colored spindle just rotates for several minutes before engaging in an assigned task. I went through three tests like resetting SMC, NVPRAM, and Apple Hardware Test, all of which show no problem to the computer from these tests. Disk utility shows no errors or repairs needed. A system report shows no errors or flags, and kernel task is under 2% of CPU and uses 834MB of Disk.

    The first time I did it, I did notice the laptop was very responsive from the smc test but the problem of slow lag occurred a few moments later. There are no applications open, I performed malware tests using Avast software. The internal OWC 6G extreme pro 480GB SSD still has 90GB free. This SSD is 3.5 years old.

    Specs:
    MBP 9,2 13 " Mid -2012
    Intel Core i7
    Memory: 8GB
    Processor: 2.9 GHZ
    OSX: 10.11.6

    Any ideas to fix the lag?
     
  2. keysofanxiety macrumors 604

    keysofanxiety

    Joined:
    Nov 23, 2011
    #2
    The issue you're encountering is due to a failing HDD SATA cable. It's a widespread issue on your model and Apple have a silent repair program for it.

    If you pop into an Apple Store or AASP, they'll replace the cable free of charge for you. :)
     
  3. Filmboy490 thread starter macrumors newbie

    Filmboy490

    Joined:
    Apr 12, 2017
    #3
    Great! Oddly enough, 2 years ago in Berlin the local AASP gave me a new cable. I will go now....again.
     
  4. keysofanxiety macrumors 604

    keysofanxiety

    Joined:
    Nov 23, 2011
    #4
    Yeah they tend to fail quite frequently as they get corroded from air/dust alone. The replacement SATA cables don't have a different design either, still flawed without appropriate shielding.
     
  5. Filmboy490 thread starter macrumors newbie

    Filmboy490

    Joined:
    Apr 12, 2017
    #5
    Great and thanks! It worked. Damn cable. Its gone bad 2x in my MPB over 4 years.
     
  6. Count Blah macrumors 68030

    Count Blah

    Joined:
    Jan 6, 2004
    Location:
    US of A
    #6
    You could always try safe mode first, to see if it's anything related to recent software changes - https://support.apple.com/en-us/HT201262

    If it still acts slow there, then I think the 1st suggestion is correct.

    Good Luck!!
     
  7. jerryk macrumors 68020

    Joined:
    Nov 3, 2011
    Location:
    SF Bay Area
    #7
    Heat kills them. If you are doing things like rendering you are cooking the cables. Especially if you have a rotational drive.
     
  8. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #8
    You might also be experiencing symptoms of hard drive failure.
    Is the hard drive original (near 5 years old)?
     

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