HP Audio isn't working after installing Windows 7

I recently installed Windows 7 on my HP Pavilion dv2000 notebook. I did this without noticing it was muted. Now I have no audio. I have tried downloading a variety of vista compatible Conexant High-Definition Audio drivers and as yet none have worked.

The audio icon in my taskbar has a red circle with a white cross in it. When I try to install the latest driver through windows task manager it says I have the latest one. When I do a windows update I get no difference. Not really sure what I should do now. I'm out of ideas. Help? Please?

Have you tried downloading the dirvers from the HP website? I had to do that in the past..?

Select software and drivers HP Pavilion dv2000 CTO Notebook PC - HP Customer Care (United States - English)

Thanks champ, I feel a bit dicky.