No Sound - Windows 8.1 on IMac 27 (mid 2011)

i have this problem too, help plz.

Same here, iMac 27" mid 2011, Windows 8.1 64 bit, "High Definition Audio Controller" has the following under General->Device Status in the Device Manager:

This device cannot start. (Code 10)

{Operation Failed}
The requested operation was unsuccessful.

Sound, of course, works fine under Mac OS X 10.9.2

Same problem also for me,

installed Win 8.1 yesterday, with several problems caused MBR/GPT, solved with a dedicated HDD.

All drivers were successfull installed with the exception of High definition Audio.

I've tried to reinstall all drivers, also for the Graphic Adapter (in ATI site there are some drivers more updated for bootcamp), I've downloaded Realtek HD Audio from official web site, installed but the error still remains.

I don't know what to do, the only thing that i've noticed is that the driver that is not working is a Microsoft driver and not a specific driver. I suppose that in bootcamp there's not the right driver for our Audio Card.

Will do a further search tonight in OSX System information to see what hw is on board, to search it on the net.

Please support us !

Regards

I am having this same issue, I worked around it for $8 and/or using my bluetooth headphones instead. I didn't think it would work but after pairing my bluetooth headphones and resetting the bluetooth headphones(http://www.amazon.com/LG-Electronics-HBS-730-Bluetooth-Headset/dp/B009A5204K/ref =sr_1_1?ie=UTF8&qid=1399397810&sr=8-1&keywords=lg+wireless+bluetooth+headset) to the default input/output sound in the Preferences app, viola it worked, sound, beautiful music to my ears. I also bought an external USB sound card/dongle(http://www.amazon.com/gp/product/B001MSS6CS/ref=oh_details_o01_s00_i00?ie=UTF8&p sc=1) that worked great also, no setup, no mus, no fuss, for only $8...hope this helps.... 🙂

Hi Dragon, I think that is a solution only for Apple.

They don't want to permit to anyone to use other than OSX but there are not enough games in their OS.

It's not a solution to connect any additional item because they don't want to release a specific driver...

So I've decided, iMac is now away from my house 👿 and I'm returned to PC, now I can do anything I want, away from their "gold" jail.