Resolved No Sound on 2011 iMac running Windows 8.1

panzer06

macrumors 68040
Original poster
Sep 23, 2006
3,009
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Kilrath
Everything else works, just no sound.

Tried the Realtek install and a reboot and nothing. Does anyone have any suggestions?

Cheers,
 
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doynton

macrumors 6502
Oct 19, 2014
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15
Did you install Windows using BIOS or EFI?

The 2011 Macs are preUEFI so they do not expose all devices at the EFI level, but they do in the CSM-BIOS layer that Bootcamp uses. If you want your Audio devices to show up, you will need to use CSM-BIOS (and hence Bootcamp). If you already have 3 partitions, they are not supported under the CSM-BIOS Bootcamp installation.
https://discussions.apple.com/thread/6770870
 

panzer06

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Original poster
Sep 23, 2006
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Kilrath
Did you install Windows using BIOS or EFI?

https://discussions.apple.com/thread/6770870
EFI, this looks like my problem. I'll look into an external sound device to get around this.

I had all sort of trouble getting windows installed so perhaps the EFI was the issue. Maybe I should have used MBR when creating the partition on the drive I was going to install windows.

I ended up cloning my MSI GT70 windows 8.1 install. Booted up from TB with no issues. Immediately installed the BC drivers. Fastest windows setup on a Mac ever! Just no sound.

Thanks for pointing me in the right direction.
 

panzer06

macrumors 68040
Original poster
Sep 23, 2006
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Kilrath
Bought Creative Labs Omni Surround 5.1 external USB sound card. Windows sound works for now. Just need to find a legit Windows 8.1 Key on sale. Almost done with getting Bootcamp loaded with all my games!
 
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