2.0GHz, 2.3GHzもしくは2.6GHzクアッドコアIntel Core i7プロセッサ (Turbo Boost 最大3.8GHz) 6MB共有L3 キャッシュ付き。

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Computer keeps shutting down sporadically with little pattern.

Hi all,

My mac has a weird issue where it shuts down seemingly at random, often using a web browser (happens in chrome, firefox, and safari), but also when I've been using word. I upgraded to High Sierra about a month ago and it seemed to start about a week after that.

It never crashes when plugged into a monitor and the screen is shut, but it has crashed when the screen is open and it's connected to a monitor. It happens regardless of whether it's plugged in or on battery, and I'll often open the computer and find that it shut off on it's own. I can get anywhere from 5 minutes to an hour of use without it shutting down.

It does NOT happen when I'm playing high-CPU games, using my Windows partition, or watching Netflix (it did crash on HBO Go though).

The battery is on replace soon and it does spontaneously go to sleep on occasion when it gets to ~30 to 40% remaining. Plugging it in allows me to wake it from sleep (but doesn't resolve the shutting down issue).

I'm honestly so clueless about what this is. I spoke to three support people over chat and they said they weren't really sure either.

Steps I've already taken:

  • Restart with no applications open
  • Reset the SMC
  • Starting up in safe mode (crashed after I put it away for ~2 hours).
  • Reinstalling the operating system

None of these solved the problem.

Screenshots of coconut battery and TG pro readouts. Let me know if there's more info I can provide.

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To start with your battery is on its last legs! Time for a replacement! Here's the IFIXIT guide: MacBook Pro 15" Retina Display Late 2013のバッテリーの交換 & the needed battery: MacBook Pro 15" Retina (Late 2013-Mid 2014) Battery

I'm thinking the batteries condition is effecting the OS as the power is likely fluctuating with such a poor battery. As you need to take the logic board out anyways I would give the system a good clean and clean and re-apply the thermal paste as well as you seam to run the system hard.

I would recommend you get the full version of TG Pro so you can leverage the turbo function to improve the cooling when the system is running hard. And lastly you may want to review what you are running at the time to see if you have enough RAM and/or storage space.

MacBook Pro 15" Retina (Late 2013-Mid 2014) Battery画像

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MacBook Pro 15" Retina (Late 2013-Mid 2014) Battery

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Sawyer Brooks さん、ありがとうございました!
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