Boot Camp Sound Problems with Windows 10 after update to 10.11.4

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Level 1

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Boot Camp Sound Problems with Windows 10 after update to 10.11.4

Loaded Windows 10 into Boot Camp, there was an initial problem with no internet connection. Found a driver and this problem was solved. Update El Capitan to the new standard 10.11.4. Now there is NO sound in Boot Camp/ Windows 10. Have tried using the Boot Camp method to obtain the new drivers from Apple, but to date still NO Sound. Can anybody offer some guidance on a remedy to solve this issue. just a thought, is it likely that each up date by Apple will bring a problem?

Regards

iPhone 4S, iOS 5.0.1

Posted on Mar 24, 2016 2:10 PM

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Answer 1

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sittingbull Author

Level 1

5 points

Mar 26, 2016 3:16 PM in response to Loner T

Brilliant In Windows I uninstalled the Real Tek Driver via the Manger the Control Panel, re-run the Boot Camp Compatibility program from the USB stick. When it freezes at the Real Tek End Task to close the program. Now when you view the sound driver in the Control Panel it shows Cirrus and not Real Tek. Now it plays sound. Thanks for your help and I hope this will solve other peoples similar sound problem. In this case the Real Tek was a red herring.🙂

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Answer 2

Loner T

Level 9

59,536 points

Mar 24, 2016 6:51 PM in response to sittingbull

Please run SMC and NVRAM reset and test.

Reset the System Management Controller (SMC) on your Mac - Apple Support

How to Reset NVRAM on your Mac - Apple Support

A bit obvious, but please also check your Mute button. Do you have sound through external speakers?

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Answer 3

Rudegar

Level 10

180,318 points

Mar 26, 2016 7:20 AM in response to Zoruzero

and audio worked at first but stopped working after you upgraded OS X ?

with my iMac I spend a lot of time trying to install the realtek audio driver without success until I installed the cirrus logic audio driver which was the audio chip in my mac

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Answer 4

Loner T

Level 9

59,536 points

Mar 26, 2016 6:23 PM in response to Zoruzero

Did you partition your disk using Disk Utility or allow BC Assistant to partition the disk. On your specific model, W10 is supported, but it is not a very standard EFI implementation. If you want to try, removed the current W10 using BCA. Once it is removed, re-run BCA and try your installation. Do not interrupt the boot sequence by manually using Alt/Option.

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Answer 5

Loner T

Level 9

59,536 points

Mar 26, 2016 10:33 AM in response to Zoruzero

The yellow triangle indicates no valid drivers. As suggested in another thread, please try to install Cirrus drivers. My 2012 13-in MBP has the CS4206B/AB82 driver.

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Answer 6

Loner T

Level 9

59,536 points

Mar 26, 2016 10:49 AM in response to Zoruzero

Did you reboot after the driver installation? Usually, if you run setup.exe, it will request a reboot, but if you run the individual driver by hand, it does not.

You should also run SMC/NVRAM Reset after reboot.

What does msinfo32 show under Audio?

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Answer 7

Loner T

Level 9

59,536 points

Mar 27, 2016 2:22 AM in response to sittingbull

What is the Mac model? Different models have Cirrus or RealTek.

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Answer 8

sittingbull Author

Level 1

5 points

Mar 26, 2016 12:06 PM in response to sittingbull

I have loaded Realtek drivers from web site, no sound. This was as an individual program since the Boot Camp setup freezes. I have reset SMC as per instructions, no joy. Have Reset NVRAM, still no sound. In Windows 10 all the indications are that the volume is there as there is movement showing at all the relevant locations but NO sound out the inbuilt speakers. The MAC is Late 2012 now running El Capitan with the last update. Boot Camp 6 and Windows 10 Upgrade from Windows Ultimate. The most annoying thing is that all worked great till the Apple upgrade to El Capitan upgrade. As anybody got any ideas?? As an after thought what are the keyboard buttons that operate the sound when running in Windows in Boot Camp, just in case I am not using the correct ones.

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Answer 9

Zoruzero

Level 1

8 points

Mar 27, 2016 3:32 PM in response to Loner T

You're right, EFI doesn't go well with older macs and causes driver issues. So i reinstalled W10 but through the "Windows" installer and not the EFI one. I had to reformat my disk (doing the clear command in cmd) and even though it deleted my mac partition, i honestly don't really care since i already have a backup of osx i can restore from if i have to reinstall it in the future. Again LonerT, thanks for the active help. (you the real mvp)

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Answer 10

Loner T

Level 9

59,536 points

Mar 26, 2016 6:50 AM in response to Zoruzero

What is the Mac year/model? Was W10 installed using BC Assistant?

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Answer 11

Loner T

Level 9

59,536 points

Mar 26, 2016 10:16 AM in response to Zoruzero

You have a W10 EFI boot installation. What are the audio devices in Device Manager?

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Answer 12

Zoruzero

Level 1

8 points

Mar 26, 2016 10:28 AM in response to Loner T

Well under sound it says that there are no audio devices installed. Under device manager (under system devices) , There's the "High definition Audio Controller" with the yellow caution icon next to it. Something i've realized, is that theres no "audio inputs and outputs" tab.

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Answer 13

Zoruzero

Level 1

8 points

Mar 26, 2016 10:41 AM in response to Loner T

I went through the Cirrus CS4206 installation process, it shows the cirrus driver and says its "ready to use". I hit finish but when i go into device manager, i still don't see a sound and game controllers tab and i have yet to see any audio drivers appear in Sound yet.

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Answer 14

Loner T

Level 9

59,536 points

Mar 26, 2016 8:41 AM in response to Zoruzero

Can you check if your Mac's W10 is BIOS or UEFI? W10 Forced Updates is really nasty and replaces drivers without users knowledge.

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Answer 15

Zoruzero

Level 1

8 points

Mar 26, 2016 7:12 AM in response to Loner T

My macbook pro is a mid-2012 13" model. To make the installer and to get the support software, i used bootcamp. But to partition and to install W10, I used disk utility. :/ I dont see how, but could this be the problem?

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