iMac Retina 5K install AMD Boot Camp Driver not working

Question

iMac Retina 5K install AMD Boot Camp Driver not working

I'm having this problem, and have spent 3 days and nights trying many different ways, looked up many helpful threads but none successfully solves my problem.

I upgraded to EI CAPITAN, boot camp to 6, installed win 10, win 8.1. Neither worked. I downloaded AMD drivers from their site as below, no luck

I also saw people saying win 7 will work, but I can't find a legit Win 7 ISO file anywhere. Microsoft site says The product key I've entered appears to be for software which was pre-installed by the device manufacturer. Anywhere else's ISO file will fail before the installing page.

What can I do? All I want is just a working windows on my imac...

iMac with Retina 5K display, OS X El Capitan (10.11.5), null

Posted on May 24, 2016 3:11 PM

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Answer 1

Loner T

Level 9

59,536 points

May 25, 2016 3:00 AM in response to ejshanghainese

The Product Key you are using is tied to an OEM PC. Do you the installation media which came with this Product Key?

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Answer 2

May 25, 2016 3:16 AM in response to Loner T

Thanks Loner! You have helped so many people there, really wish you can help me this time.

It's a PC that came with no media at all, nothing. Windows was pre-installed. The product key was on the label at the back of the laptop.

I saw threads that people installed win 10 on imac retina 5k successully with AMD R9 M290X driver. What have I missed?

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Answer 3

Loner T

Level 9

59,536 points

May 25, 2016 5:05 AM in response to ejshanghainese

You may want to install W8.1/W10 without a Product Key and then install BC drivers (not the AMD versions). Once Windows is fully functional, try and Activate Windows using the W7 Product Key.

The W8.1/W10 ISOs are available at https://www.microsoft.com/en-us/software-download/home .

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Answer 4

May 25, 2016 12:42 PM in response to Loner T

I'm having some new problem now... I'm almost going to die.

Everytime I'm on the stage 'create win 7 later version, install ....' it gives me this when it goes to download process.

This whole process I have done at least 20 times in the past 4 days without any problem. All of a sudden, it won't go on now.

My network is fine, I can watch youtube videos smoothly. I also restarted iMac and my router a few times. tried both win 8.1 or win 10 ISO files. It just won't go on.

If this is just a temporary incident, I'll wait until tomorrow to try again, but if it's not, then the windows on Mac dream is forever gone...

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Answer 5

May 25, 2016 2:42 PM in response to ejshanghainese

I bypassed the download part, manually downloaded the support software, and installed win 10 without entering my product code. But same graphic card problem is still there. sad:(

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Answer 6

Loner T

Level 9

59,536 points

May 26, 2016 5:27 PM in response to ejshanghainese

Does W10 identify your card correctly?

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Answer 7

May 27, 2016 3:28 AM in response to Loner T

No, it never did. That was why I searched on AMD site for boot camp drive, also tried some 8.1 beta drive which other people suggested. None worked.

The boot camp 'downloading part' is still not working saying network problem. I have cleared preference files. but no luck either. Also My apple ID was locked last night for some unknown reason.

I've never encountered so many apple problems in such a short time. I'm totally blown away... in a bad way.

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Answer 8

Loner T

Level 9

59,536 points

May 27, 2016 6:08 AM in response to ejshanghainese

Are you familiar with Brigadier - https://github.com/timsutton/brigadier ?

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Answer 9

Jun 12, 2016 3:16 AM in response to Loner T

Hi, Loner. I spent sometime trying Brigadier. No sure if its could solve the problem or its me not doing it right. But I finally got win 7 installed on iMac, and guess what? Graphic card still not working.

So I've tried win 7,8,10. None of them could have a AMD R9 working. that's gotta be something to do with my iMac right?

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Answer 10

Aug 10, 2016 2:23 AM in response to ejshanghainese

I have the same problem too, only just bought my Late 2014 retina iMac at the weekend

Tried Windows 7, 8 and 10 too

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Answer 11

Loner T

Level 9

59,536 points

Aug 10, 2016 5:16 AM in response to ejshanghainese

Another user took the iMac back to Apple Storage and they replaced the Logic Board and then Windows recognized the GPU, as expected.

Let me know if you need the specifics of that discussion.

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Answer 12

Loner T

Level 9

59,536 points

Aug 10, 2016 5:17 AM in response to jiandrews

jiandrews wrote:

I have the same problem too, only just bought my Late 2014 retina iMac at the weekend

Tried Windows 7, 8 and 10 too

Is the card unrecognized or are you seeing the card, but without valid drivers?

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Answer 13

Aug 10, 2016 3:35 PM in response to Loner T

I have the same issue, windows recognizes the card fine (after a GPU probe that blanks the screen) but the AMD driver won't "mount" because of the "error 43" thing.

The only caveat here is that I'm running the new anniversary windows 10 instead of stock windows 10, but not sure that that is relevant given that others have tried other windows versions with no luck. Seems a driver issue.

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Answer 14

Loner T

Level 9

59,536 points

Aug 10, 2016 3:51 PM in response to rob hanson1

The error 43 is a driver crash and the following recovery. It seems to be an issue across several W10 builds.

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