Bluetooth and audio driver problem in OS X 10.10 and Win 8.1 dual boot using Boot Camp

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Level 1

8 points

Bluetooth and audio driver problem in OS X 10.10 and Win 8.1 dual boot using Boot Camp

I am dual booting Windows 8.1 Pro 64-bit and OS X 10.10 on a MacBook Pro (13-inch, Mid 2012). I used Boot Camp to create a Windows partition, installed Windows, and then installed Windows Support Drivers 5.1.5621 (recommended for my system here: http://support.apple.com/kb/DL1720). Then I ran Windows Update to install any available updates.

Below is a screen capture of Windows Device Manager showing a problem with two drivers: Bluetooth USB Host Controller and High Definition Audio Device. I right-clicked each and clicked "Update Driver Software" and "Search automatically" but that didn't work. Then I went back to the Windows Support Drivers and ran CirrusAudioCS4206x64.exe and AppleBluetoothInstaller64.exe. That didn't work. Then I uninstalled both drivers and ran each .exe file again. That didn't work.

My MacBook (http://support.apple.com/kb/sp649) has a 2.9GHz processor, 8GB of RAM and a 256GB SSD.

Thanks in advance for any suggestions.

MacBook Pro, OS X Yosemite (10.10), 13-inch, Mid 2012

Posted on Nov 5, 2014 7:33 AM

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Answer 1

Loner T

Level 9

59,536 points

Nov 5, 2014 8:27 AM in response to MicrApple

Using Windows Update will cause untold grief, especially for drivers. I have the same hardware and W8.1 64-bit (not Pro). The BC drivers work without any issues.

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Answer 2

MicrApple Author

Level 1

8 points

Nov 5, 2014 8:53 AM in response to Loner T

It's good to know that your Win 8.1 installation went well with similar hardware. I don't think it's a Windows Update driver versus Boot Camp driver problem because the issue was there before I ran Windows Update. Moreover, I installed the BC drivers again after Windows Update, and the issue persists.

Thanks for the info.

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Answer 3

Loner T

Level 9

59,536 points

Nov 5, 2014 9:49 AM in response to MicrApple

One suggestion would be to uninstall all drivers (Windows Update and Apple) and then just install Apple BC drivers and verify that they work as you want them to.

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Answer 4

MicrApple Author

Level 1

8 points

Nov 5, 2014 2:28 PM in response to Loner T

Problem solved. I re-installed Boot Camp (ran setup.exe in the BootCamp folder) without uninstalling any drivers, and apparently the second time is the charm because now all drivers are properly installed. Go figure. Thanks again, Loner T.

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Answer 5

Loner T

Level 9

59,536 points

Nov 5, 2014 2:39 PM in response to MicrApple

Glad it works now.

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