Windows 8 Audio Problem

Hi all,

I've just installed Windows 8 on my macbook pro 13" early 2011, and while everything works perfecly, my audio does not work at all. The drivers are installed, supposedly, but when I check the device manager, it says that the drive could not be started. Tried to reinstall the bootcamp drivers, so I downloaded the package for my macbook from the official apple sites, but that did not solve the problem. I also tried finding a solution here, but the answer were not working for me. Did anybody got this working?

Thanks for your answers!