CELSIUS M440 No windows 7 audio driver :( What to do?

Hi.
I got hold of a CELSIUS M440 pc, its from Fujitsu.
From past experience i know that Fujitsu atleast older fujitsu pc's is one big hassel to work with.

After a lot of fighting with win 7 installation i manged to get it working, but now with out an audio output.

Im using the drivers microsoft found for me, but it seems the audio driver isnt working.
Iv tried reinstalling the driver from microsofts auto update but with no luck.

So what are my options?
Only thing i can think of is installing an pci audio card. And getting driver for that.