Here is what I found and what worked for my hp pavilion dv9205us (dv9000 family) notebook with Windows XP x64 Professional installed.
I had been looking for around a month for a driver.
I currently have XP x64 SP2 installed, however I don't believe it makes a difference; anyways:
NOTE: Experienced users, please forgive me for the amount of detail and skip over what you already know. I have read other posts, where if you are a power user, you know what people are talking about, however for beginners I have seen posts that mention things such as 'I don't know what your talking about' etc.; hence the detail.
I downloaded the following file from the HP site:
ftp://ftp.hp.com/pub/softpaq/sp35001-35500/sp35271.exe
I ran it and it extracts by default to: c:\swsetup\
SP35271 (If need be, you should be able to search the hp web site for
SP35271)
Once you select Next it runs this scan for the Hardware and mine failed with the following error with an OK option:
Error - Driver Installation Failed Could not find the MEDIA device for this driver.
I selected OK.
I opened Device Manager (Right-click on My Computer > Manage > select Device Manager from the left pane)
Beneath a section labeled Other devices; which has a question mark in from of that name
I double-clicked on the entry: Audio Device on High Definition Audio Bus
Went to the Driver tab and selected Update Driver.
The 'Hardware Update Wizard' dialog appears, select 'Install from a list or specific location (Advanced)' > Next
Select 'Don't search. I will choose the driver to install' > Next
For the Hardware Type select 'Show All Devices' (it takes longer to scroll down to Sound, video and game controllers) > Next
Select 'Have Disk', on the 'Install From Disk' panel, browse to where you extracted the files to; which by default is: c:\swsetup\SP35271 and select OK
On the Select the device driver you want to install for this hardware panel, beneath Model, it should list: Conexant High Definition Audio-Venice 5045
Select it > Next, it should display a 'Update Driver Warning' panel, select Yes to continue installing this driver.
It should then install the software for the driver, once it is done you should have sound!
I Thank God for helping me get this figured out, and that is the truth!