what do you mean, I can't install it now? how come it install your other drivers but not this one, on my main OSHeadphone mode switches the card to downmixing mode. Windows multichannel sound switches to 2.0 and it does not interact with the Windows audio panel. That's how it should be. This is the solution that the creative team made.
Daniel's driver breaks the system... I've encountered this myself before... I've already written about it.
I installed Daniel version also on the fresh OS..
I get the red notification of installing unverified driver, I click continue, but it doesn't actually install the drivers to the sound device.