I've read a bit about the troubles of downgrading Vista Home to XP with Sony products. My boss has a Sony VGN-FZ 460E notebook and would love to downgrade to XP Professional.
I've used NLite and Univeral Extractor to create an XP Professional bootable installation disk and slipstream in most of the XP drivers that I could find for the unit but there remains one large problem:
Although MSConfig thinks that audio is on at boot up, I cannot find drivers that will work for the HD Audio. Or perhaps I should restate that, I have Sigmatel 6.10.5614.0 drivers and one prior version, neither of which seem to work. I can install the audio codec for the high definition sound but the audio device cannot start, even though it is enabled.
I know that this particular device is not one that is "allowed" for a downgrade. I'm willing to put in some extra effort to try to get this done.
I'm sorry. I was able to get this done (and then immediately made a backup image so that I would *never* have to do this again ). It was an odd combination of loading one controller, loading the high-def software, uninstalling the controller and adding new drivers. Done in the right order, it finally worked.
I have Sony Vaio VGN-FZ460E/B. So, my challenge is that I have been looking for the information how to downgrade Vista Home to XP professional. Finally, the laptop is ready to have a fun with XP, but not completely. The problem is, and I believe that it is similar to yours, that I do not have HD audio output via HDMI. In other words, the audio device does not work properly. As I understand, you have found the solution to solve this problem. Would you be so kind to explain how to finalize to reach the happy end?
Best regards from Lithuania. Thank you in advance.