No sound after installing Windows 10 on Boot Camp

Question

No sound after installing Windows 10 on Boot Camp

I have a MacBook Pro 13' (Mid-2012) 2.9GHz with 750Gb and 8Gb RAM and I've installed Windows 10 in my Boot Camp partition. After installing Boot Camp tools (version 6) I could work with all the drivers installed, except for audio. I managed to re-install the audio drivers from RealTek website (updated), but the problem remains the same. Windows says "No audio output device is installed" and checking the Device Manager application I found the "High Definition Audio Controller" driver shows, as device status " This device cannot start. (Code 10) {Operation Failed} The requested operation was unsuccessful.".

Does anyone knows what can I do, in order to have sound on my mac (on Windows 10 partition)?

With best regards,

Rui

MacBook Pro, Other OS, Windows 10 on Bootcamp

Posted on Sep 20, 2015 7:56 AM

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Answer 1

Best reply

Loner T

Level 9

59,471 points

Sep 20, 2015 10:09 AM in response to ruieduardo.fa.lopes

Your Mac has Cirrus drivers, not RealTek. I have the same Mac. Can you delete the device and Repair BC drivers?

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Answer 2

Sep 20, 2015 12:40 PM in response to Loner T

Oh, I didn't know... thanks 🙂 But I tried what you've told me but nothing happens... I uninstalled the device and made a repair via Boot Camp tools but nothing... I'm searching for updated drivers at Cirrus's website but I only find drivers of 2013...

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Answer 3

Loner T

Level 9

59,471 points

Sep 20, 2015 12:56 PM in response to ruieduardo.fa.lopes

On W8.1, this is what I have...

Is your Windows 10 installation a BIOS for UEFI installation?

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Answer 4

Sep 20, 2015 3:09 PM in response to Loner T

Here, in System Information I have, as BIOS, UEFI, as you can see in the image below.

In the Device Manager application I don't have a "Sound, video and Game Controllers" or "Audio Inputs and outputs". Instead, I have "System Devices" and when I install Cirrus's Drivers indicated by Apple, on the "Drivers" folder on Boot Camp installation items, it appears as "High Definition Audio Controller", as you can see also below.

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Answer 5

Loner T

Level 9

59,471 points

Sep 20, 2015 4:56 PM in response to ruieduardo.fa.lopes

The UEFI installation will not work on this Mac. Was this an upgrade from W7/8+ or a clean installation?

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Answer 6

Sep 21, 2015 7:42 AM in response to Loner T

It was a clean installation.

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Answer 7

Loner T

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Sep 21, 2015 8:04 AM in response to ruieduardo.fa.lopes

Did the installation use BC Assistant?

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Answer 8

Sep 21, 2015 10:07 AM in response to Loner T

Yes. With the Boot Camp Assistant app on Mac OS X I've created a usb drive installation device and then, as I went through some problems on the internet connection here at home, later, I downloaded the windows support from apple (via Boot Camp Assistant). The only thing I made off-the-instructions was deleting the hybrid MBR partition, as a solution to an error on Windows installation, with the gdisk command on terminal.

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Answer 9

Loner T

Level 9

59,471 points

Sep 21, 2015 10:20 AM in response to ruieduardo.fa.lopes

ruieduardo.fa.lopes wrote:

The only thing I made off-the-instructions was deleting the hybrid MBR partition, as a solution to an error on Windows installation, with the gdisk command on terminal.

This can result in the Audio issues, because the CSM-BIOS layer extracts the sub-devices which are Cirrus Audio devices. On preUEFI Mac like yours, this did not happen, so you do not have any Audio devices and hence no drivers can be installed. Can you describe what was the issue which required the MBR to be deleted? Was it a GPT vs MBR issue?

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Answer 10

Sep 21, 2015 12:00 PM in response to Loner T

Yes. The issue was an error message, when is supposed to choice in which partition do you want to install Windows, saying: "Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI systems, Windows can only be installed to GPT disks". I've searched for it on the Internet and that was the only solution I've found.

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Answer 11

Loner T

Level 9

59,471 points

Sep 21, 2015 12:10 PM in response to ruieduardo.fa.lopes

This happens, because you have used Alt/Option to start from the USB installer and chosen EFI Boot. Without such an interruption, your specific Mac model will always use an MBR/BIOS method. If BCA failed to create the MBR properly, it can be easily corrected.

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Answer 12

Sep 21, 2015 12:38 PM in response to Loner T

But is it something I can do now, to correct it? I suppose that now, even if I adjust Boot Camp options to reboot as Windows without asking, nothing will happen, or not?

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Answer 13

Loner T

Level 9

59,471 points

Sep 21, 2015 12:42 PM in response to ruieduardo.fa.lopes

No. It will require a re-installation of Windows 10.

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Answer 14

Sep 21, 2015 12:49 PM in response to Loner T

Ok, I'll do it. Even if the sound doesn't work again I'll try it. 🙂 So, in order to do it, what I should do? Get Windows *.iso on a flash USB drive, with all Windows support included, select BOOTCAMP disk as a startup disk and format BOOTCAMP partition? Or I should format BOOTCAMP on Disk Utility (on Mac OS X) before? Sorry for these dumb questions, but I just want to do try it the right way, now. 😝

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Answer 15

Loner T

Level 9

59,471 points

Sep 21, 2015 2:27 PM in response to ruieduardo.fa.lopes

Run BCA and follow prompts. If it fails with the GPT vs MBR error, please post back.

Use Windows 10 on your Mac with Boot Camp - Apple Support.

How to install Windows using Boot Camp - Apple Support

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