goto Device Manager, and right click on the Multimedia Controller and install the driver manually (i.e. let you choose from a list of device, then click have Disk and select the folder that contain the extracted files from jusce's post). Once that's done, it will give you 4 options, just choose the top one and accept that it is not a signed driver (i.e. approved by Windows 7). It will work and then you use control panel to select the sound setup i.e. configure speakers.
Already tried it? Give your review.