Re: HP Special Edition L2000 --Installed Win7Home Edition- 64bit and lost audio.

Hello KBos,
Welcome to the HP Forums.

I see that you've upgraded the OS to Windows Vista from XP. That now you're having an Audio issue. I will try to help you with this.

The driver update that you've run, was for XP. This could be why it never helped. On the HP site, there's no Audio Driver update for Windows.

You can take a look at the following documents to see if what they suggest can  help you with resolving the issue.
No Sound from the Speakers (Windows Vista)
Resolving No Sound or Audio Problems (Windows Vista)

Please let me know if this is able to help you out. Thank you for posting on the HP Forums.