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2.2 GHz (Turbo Boost up to 3.4 GHz), 2.5 GHz (Turbo Boost up to 3.7 GHz), or 2.8 GHz (Turbo Boost up to 4.0 GHz) quad-core Intel Core i7 processor with 6 MB shared L3 cache.

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MacBook Pro a1398 mid 2015 restarts under gpu load

Hey everyone.

Super excited to be joining the community.

I've recently brought a macbook pro 15" mid 2015 without the dedicated gpu (820-00138).

It was a mess when I bought it and the battery was swollen to its limit. So I disassembled everything, cleaned the PCB carefully and removed the battery. It now turns on with the charger and I was able to easily install windows.

All seemed ok until I decided to do some stress testing. The issue starts when I try to do anything gpu related. As soon as I start a gpu benchmark, the system restarts and I'm back to where I started. CPU benchmark didn't replicate the issue.

Is it possible that the issue is related to battery not being in the system yet? I want to make sure before ordering one.

PS: I played 4k videos on YouTube and didn't notice the same issue.

PS II: I bought the item to start repairing as a hobby, and have no issues working on the motherboard as I have some basic equipment to work on it and try my luck.

Any help would be appreciated.

Cheers.

Bu soruyu yanıtla Ben de bu sorunu yaşıyorum

Bu iyi bir soru mu?

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As I suspected, no difference on MacOS. Still restarts on gpu stress test.

I've read about the 3 cpu MOSFETs that usually cause crash and shut down/restart the device which is a common issue with this model. but the way I understood it, they are a result of cpu idle mode not gpu under load.

Could they be related and these 3 MOSFETs are the issues here as well?

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Give this a try as it is a known bug:

1) reboot with CMD+R pressed.

2) open Terminal

3) sudo csrutil disable

4) reboot in normal mode

5) sudo mv /System/Library/Extensions/AppleThunderboltNHI.kext

/System/Library/Extensions/AppleThunderboltNHI.kext.BAK

6) reboot with CMD+R pressed

7) csrutil enable

8) reboot and forget about problem

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Thanks for your suggestion. I wouldn't think this helps or even doable as I'm using Windows 10 on the device. Am I wrong?

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do you not have a mac system installed?

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No but I will install it just to make sure. Since I have Windows, I don't think my problem is a MacOS driver issue anyways as the code I believe is suggesting.

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conveniently, I can't even install El Capitan for the reason explained here:

https://apple.stackexchange.com/question...

I'm going to stick with Windows anyways. Hope to get more suggestions from the community.

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