No Audio Boot Camp Windows 8

Hi,

The best thing to do is:

Install Windows 7

Install the boot camp drivers appropriate for your iMac

Upgrade to windows 8 / 8.1

Re-install boot camp drivers (as windows 8 may return to default drivers.

If you wish upgrade to Windows 10
Re-install Boot camp drivers if needed.

The above is what worked for me and should work for others also.

Hi,

The best thing to do is:

Install Windows 7

Install the boot camp drivers appropriate for your iMac

Upgrade to windows 8 / 8.1

Re-install boot camp drivers (as windows 8 may return to default drivers.

The above is what worked for me and should work for others also.

I don't know if this will help, but it helped me and it solved my problem.

1. Hold "COMMAND & W" to open Search

2. Type in "Troubleshooting" and press "Enter"

3. Select "Troubleshoot Audio Playback" under "Hardware and Sound"

4. Follow the instructions

Good luck!

After a huge degree of troubleshooting i realize what you say about installing windows 7 then upgrading will probably work on a newer model machine with EFI 2.0 i believe, but on an older model using EFI 1.1 freezes when forcing an EFI boot with windows 7 and in most cases just by selecting EFI boot it actually defaults to BIOS emulation.

Im using this on an iMac 12,1 (Mid 2011)

What I've tried so far with Windows 8.1 and have had no success is installed:

Boot camp - Various versions.

Cirrus drivers - Error "not compatible, or 32-bit driver" - I believe the error when using "Have disk" has to do with the fact that the device is detected as a system device and not an audio controller. You'll notice the auto populated devices is different from a normal audio controller.

Realtek Drivers - Same as Boot Camp.

Intel HD grafx/audio - Same as Boot Camp

If anyone knows of a way to trick windows into thinking this is not a system device and something else i think the cirrus drivers will work, or maybe even remove the HW check prior to install. Its just a theory, but I've tried every trick under the sun.

I just got it all working today. For those that couldn't detect any audio device, the main problem is you installed your window 8 in EFI boot mode or what ever it's called and this is wrong. I installed my window 8.1 pro on my MacBook Pro mid 2012 via EFI mode and my sound didn't work. It couldn't detect any audio device and there was an exclamation mark with yellow background on "High definition audio controller" (sort of). So I reinstalled the window 8.1 pro and reinstall it but this time i did it properly. Instead of choosing to install in "EFI boot" i chose "window" and got it installed on my laptop and BOOM the sound is working.

Thanks me later 😀

i have real experience about this problem and the problem fixed but installing Windows 8 on Macbook Air,

Using Boot Camp Assistant you can download all drivers needed for Windows 8 that installed on Macbook. After finished installing Windows 8, login to Mac and open Boot Camp Assistant and download all drivers ( Windows support ), save on the flash disk and we can install this on Windows 8. the detail steps shared on driverchipsdotcom,

I have try and all drivers working well

+1 Minticon is right. After 3 days of research i'm absoluty sure it's an EFI problem.

So the solution for my 13 inch i7 early 2011 MacBook Pro 8,1 was:

1: Make a partition for Windows

2: download and install gptsync to check if your GPT and MBR are the same, in most cases they are not, resulting in an error message when you try to install Windows, i'll elaborate on that later* download gptsync from here: http://www.insanelymac.com/forum/topic/177505-enhanced-gptsync-tool/ use the 0.3 version

3: in terminal let gptsync check your GPT and MBR and let it sync them.

I couldn't do this under El Capitan had to use 10.9.5 to be able to do it. Maybe Yosemite works, Mavericks did

4: I had to install Windows from DVD on my MBP 8,1 in order to get the legacy MBR option holding down ALT on startup

you can choose between Windows and EFI-boot, Use Windows or you'r screwed like Minticon said.

5:* when you install Windows 10 (or 8.1) ... and you get the error message. Can't install on a GPT disk or something similar, your MBR and GPT are not synced. Only after syncing with gptsync I was able to use the legacy mode.

remark: I started using a tweaked bootcamp assistent to be able to boot from a USB stick, on my MBP 8,1 that was a dead end because using USB I was not able to boot into legacy mode that way USB only offered EFI-Boot

Somehow using (virtual/synced) MBR is the only way to prevent the notorious Code 10 Can't start audio device blablabla) from showing up.

Using MBR my HD audio installed correctly as: Cirrus Logic 4206B AB28 on teardown pictures from macfixit I saw my MBP had the 4206B CNZ chip, that was not enough info to help me out. Minticons info finally brought me on the right track.

hope this helps, w10 works perfect now.

Check Device Manager and look for any devices which have a yellow triangle with exclamation point. The driver may be installed with incorrect privileges. Re-install the driver using Administrative privileges and compatibility set to W7/W8+.

You have tried what Tsjuni? There's not much info in your posts. And what kind of machine do you use?

Did you try to install W8 through Boot Camp or did you try to install W8 using gptsync and/or did you make sure somehow you used the MBR/legacy (not the EFI) mode.

I can guarantee you if your not in MBR mode (see my earlier post) even trying to install the right driver does not work. The problem is in EFI mode Windows 8 and 10 do not see the audio hardware from certain machines. My MacBook 8,1 (Early 2011) was one of them.

AFAIK there are no people that got this fixed by just installing the right driver.

I should have been more clear.

I am talking about a Windows 7 installation, not Windows 8. I have installed Windows 7 through bootcamp. I did this with a Windows 7 DVD.

I have tried this already but with no succes.

Found one solution that works after working through a bunch that didn't.

The audio drivers that come with the latest boot camp don't work to produce sound even though Windows is reporting that the device High Definition Audio is working.

The task is to update the device driver using the driver from Cirrus Logic which can be found at

http://www.stuffedcow.net/macbook_audio. Select "WinVista" version on this page or use this link to download the zip that contains the drivers at http://www.stuffedcow.net/files/CS4207_WinVista_Win7_32-64-bit_6-6001-1-30.zip.

First unzip the drivers to a file folder of your choice that you will need to remember as you will need to point to it later, e.g. c:\users\yourname\Cirrus_Logic

Next find the audio device in device manager. Can use Search Settings "device", select "update device drivers" or "device manager" and find "Sound, Video, and Game Controllers". Under this item, you should see a High Definition Audio device that is working properly., Right Click on it and select "Update Driver Software", then "Browse My Computer for driver software", then navigate to or paste the folder path into the location window. Click Next, and it will start looking for drivers in that folder/path.

It should find the drivers and complete the installation and when it is done your sound device should now be named "Cirrus Logic". Be patient at this step, it can take a few minutes.

Must reboot computer at this point and then sound through speakers or audio jack should be working!

Good Luck,

Darryl

Although some 2006 machines have a 64 bit processor (C2D) there are limitations that make it essentially 32 bit machines. Their EFI is 32 bit for example and I know there are problems with some of the video hardware.

Let us know if W7 32 worked for you, my guess: it does. And possibly W10 too.

Good luck.

Already tried that. It is able to install bootcamp with the drivers but the sound doesn't work.

I will install the 32 bit version of W7 pro and get back to you with the results. Thanks for the advice!

I installed windows 8 through a USB in EFI mode, as a result I do not have any audio. ADB1973 wrote, "The problem is in EFI mode Windows 8 and 10 do not see the audio hardware from certain machines. My MacBook 8,1 (Early 2011) was one of them". I have a macbook pro early 2011 with a samsung pro 850 ssd. Is there a solution to this problem? Windows is not recognizing an audio device. Whats funny is I can connect to a Bluetooth device and sound plays out of it.

If you use the normal BC Assistant method, for a 2011 Mac, it creates a Hybrid MBR. If you used a USB to work around a dysfunctional Optical drive, the problem's root lies there. Macs prior to Late 2013 models are preUEFI and require a legacy BIOS/MBR based installation to work properly.

Only CSM-BIOS exposes the audio devices correctly.

I got mine working and I was going to post how I did and found my method very similar to the one suggested by Vo0d0o (pasted below). I went straight to the first Cirrus Logic exe file (CirrusAudioCS4206x64) and ran it worked. I've tried dozens of other things before, so maybe one of the things I previously tried took care of the second exe file...

5k imac, windows 10.

**************

From Vo0d0o:

This is a reall simple fix so if anyone sees this i literally did this about a minute before typing this post because everyone should feel stupid to how easy this fix is....

Navigate on you >MAC< to the Bootcamp application. Before this make sure you have a 8gb USB flashdrive formatted to Fat 32...windows default. Open Bootcamp app, and install the latest Bootcamp drivers onto the USB... I suggest naming the USB to SUPPORT all caps after doing this...

Navigate to Windows Partition... on boot menu....

Open up file explorer, click on you new SUPPORT drive, open up Bootcamp folder, then drivers, click on Realtek driver set up .exe, and install that (depending on your computer it will prompt you to restart it or not after installing). Next after rebooting or re-installing the Realtek driver.... head into the Cirrus folder...

>THIS IS THE MOST IMPORTANT PART ABOUT GETTING THE SOUND TO WORK!!!!!<

CLick on the second .exe driver manual download, and run it. IF YOU DON'T DO THE SECOND ONE FIRST IT WONT WORK. After the download is complete, click on the first Cirrussetup.exe and install that. After that is complete... when you go to test your Mac's sound... there will be a slight delay... followed by the nice obnoxious chirp on Microsoft's sound test.

Sound working on Windows 8.1 x64 at 10:50, 2/21/2015