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[Solved] eGPU error 12 fail after update to Windows 10 1903 or newer (OS Build 18362.329 or newer) inc downgrade pci.sys version solution  

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MurkyConclusion
(@murkyconclusion)
New Member
Joined: 4 weeks ago
 

Newbie here,

  ive been reading this thread for about 2 weeks now, tried to follow along as best as i could but still got error failures so now I'm reaching out.

I have a an updated mac mini 2018 (sold as 2020), Windows partition on samsung t5 ssd, AMD Radeon 5700 house in a Razer Core X Chorma gaming box.  

Originally on Windows 190++ unfortunately i did not save the original information before I joined Windows insider and upgraded to 2004 (OS build 19041.246).  I downloaded both driver from AMD and the Adrenaline Red edition from bootcampdrivers, but unfortunately nothing seems to work.

 

Any suggestions?

 

---got it working 

almost scrapped the build tbh, glad i did not.

Windows insider build 2004/19645.1 

1903 V1 pci.sys

do all the other steps outlined by various folks above.  the only thing i did differently that the last week was change the cable.  The T3 cable i was using prior to today was for Apple.  switched it out with the one that came with my ASUS ZenScreen MB16AC, just on a whim too.  restarted the mac mini with the GPU plugged in.  Every thing came up...

This post was modified 3 weeks ago

Mac Mini 2018 (2020 refresh), 64GB RAM, Razer Core X Chroma Gaming Box, MSI Radeon 5700xt, Mac OS 10.5 + Windows 10 (2004 OS build 19645.1)


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Andreas Thomaidis
(@andreas_thomaidis)
Active Member
Joined: 4 weeks ago
 

@victor_boucher, hi victor, nah I haven’t uploaded the file, I’ll try and do that today sometime. 

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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Andreas Thomaidis
(@andreas_thomaidis)
Active Member
Joined: 4 weeks ago
 

@victor_boucher, here is the link:

https://drive.google.com/file/d/1nGq6mL7Gmrcb1t20EfudWyMduscZaiKj/view?usp=drivesdk

 

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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St1000
(@st1000)
Active Member
Joined: 10 months ago
 

It worked for quite a few hours. Then game crashed and it stopped working again. Will try the PCI.sys approach. 

MBP 2018 i9 32GB, 560X Razer Core X Chroma, AMDD 5700 XT. Win 10 (.295) Mac OS 10.15.1


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Kunal Kapadia
(@kunal_kapadia)
New Member
Joined: 4 weeks ago
 

Hi @andreas_thomaidis, I assume you mean to replace the pci.ssy file within mac OS, or are you doing the replacement within Windows? I'm trying it out now. I've seen a people stating to do the file replacement within Mac OS using Paragon NTS for Mac

 

Mac Mini 2020 + Razer Core X chroma + Vega 56


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Andreas Thomaidis
(@andreas_thomaidis)
Active Member
Joined: 4 weeks ago
 

@kunal_kapadia, Hey, I’m actually doing it in Windows itself I find that easier

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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Kunal Kapadia
(@kunal_kapadia)
New Member
Joined: 4 weeks ago
 

@andreas_thomaidis, so it worked kinda...

I followed everything you stated in your guide and did the transfer of the pci.sys file within windows. I rebooted and boom egpu is working and no code 12 error. BUT I've lost wifi and Bluetooth connections. 

 

ahhhh... so close!

 

I'll try playing around with the ports and see if that makes a difference.

 

 

Mac Mini 2020 + Razer Core X chroma + Vega 56


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Andreas Thomaidis
(@andreas_thomaidis)
Active Member
Joined: 4 weeks ago
 

@kunal_kapadia, Interesting about the wifi and Bluetooth. Mine actually works still but the wifi doesn't connect automatically. I have to click on the globe on the bottom right toolbar and connect manually to the wifi.

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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Kunal Kapadia
(@kunal_kapadia)
New Member
Joined: 4 weeks ago
 

@andreas_thomaidis, I switch thunderbolt ports but that screwed everything up trying to cold boot, giving me a black screen, so I had reverted back to the original 2004 build pci.sys file. I then tried the replacement hack again. The second time around it worked perfectly, with both wifi and Bluetooth working with no problems.

I booted Warzone and played that with no issues.

Does your iGPU show up in the device manager? It doesn't for me and wasn't selectable in the Unigine benchmark tool. I'm guessing it's disabled and that's why it works now, giving the eGPU enough resources to run.

It's soo stupid that this doesn't just run natively out of the box.

Thanks for the guide and help. I've been trying to get it going for the past week!

 

Mac Mini 2020 + Razer Core X chroma + Vega 56


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Andreas Thomaidis
(@andreas_thomaidis)
Active Member
Joined: 4 weeks ago
 

@kunal_kapadia, I’m glad it worked the second time. For me, when I’m running the egpu it only shows that. But if I had the both connect it will be a black screen. 

so with igpu connected only it does show up in device manager.

when I connect egpu only, that shows up on device manager as well.

 

but both connected doesn’t work. Just black screen

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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