Inspiron 1525 - no multi-channel HDMI audio with Win 7

Hi,

I've been searching everywhere and trying all kind of stuff without any luck. I know it's a known issue, but I'm looking for a workaround if it even exists.

It's a Inspiron 1525 with Intel video. Multi channel via HDMI stopped working since Win7 update (I only get 2 channels now).

Currently running generic Win drivers (6.1.7601.17514 - dated 11/19/2010).

I do manage to get multi channel audio via co-axial S/PDIF, but I'd like to use just a HDMI cable.

Any help would be more than welcome.

Thanks in advance,

Pablo