Model: pavilion 533w and others
Operating System: Windows XP (Note: might work with other versions of this os.)
Before downloading: Run Free Scan for Instant Driver Updates
Hewlett Packard (HP) pavilion 533w and others Driver. This is the driver set to enable onboard audio on the HP pavilion 533w and others I am sure that use the same chipset. You will need these if you install a different os rather then the oem install that comes from HP. It seems hard to find, and may be of use to those that can use it.
Install via the device manager