For many others that have been upgrading older systems to Windows 7 x64, and found an issue early on with the soundmax 198x audio driver, you’re not alone. The GX620’s still make up a large part of my organizations inventory and are still great Win 7 machines, with 4gb ram upgrades.
If Microsoft Update does not automatically find and install a driver for you, you can go directly to the Microsoft Update Catalog site and search for SoundMAX Integrated Digital Audio, where you will easily find the driver you need.
I have also come across the R228255 (release date: 11/2/2009, version 6.10.1.7250, A08) audio driver from DELL’s support site HERE, which also works. If you are maintaining a deployment using MDT 2010, or WDS, you will want to download the driver, extract it and incorporate it into your deployment, so that the drivers are merged into your deployment WIM.
Regards,
Joe