Help with "Unknown Device - Location 65535 (Internal High Definition Audio Bus)" Please?

Question

Hey guys,
So I recently purchased a T400 2764CTO and I downgraded it from Vista Home to XP SP3. I have been following advices from the forums on finding all the "(?) Other Devices" that needed to be installed. However, I am still stuck on the one that is posted as "Location 65535 (Internal High Definition Audio Bus)"
I have SP3 so I believe I have the KB888111 installed. 
I re-downloaded 6ea111ww.exe and installed it.
I tried following http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/Conexant-Audio-Driver-for-Vista-4-92-5-and-... from KBAM's advice.
So I'm still not sure if I missed a download or something or did something wrong. Can anyone help?
Oh, I'm not sure if this is related, but my computer won't shut down unless I manually shut it off by holding the power button. I am assuming (with lack of computer knowledge, but with some little research) that it might be these missing devices that are needed to install. So yeah, thanks!
-Danny

Answer 1

detran01,
Regarding your Conexant driver issue (v3.64.7.00, for XP)...
Saw your post and wanted to contribute.
When you say you "downgraded" from Vista Home to XP/SP3, I gather you mean you installed Win XP "clean," as opposed to configuring the 2764-CTO for purchase with the factory Win XP "downgrade" image.
I say this because the factory Win XP image (which now ships as SP3) will load with the basic devices properly installed. (Still, a number of drivers will not be up to date and certain optional services require user action.)
Also, you report the machine was originally a Vista Home system.  As Lenovo's ordering system does not seem to allow substitution of Win XP for Vista Home, this pretty much confirms that you're installing XP from scratch. Indeed, while this would account for "missing" devices, it also facilitates your downloading current drivers at this time. All good.
OK, let's start with Herik's point.
Win XP/SP3 actually does include KB888111, so this prereq should not be an issue. Also, while Herik provides the registry key that can toggle a system's behavior between SP2 and SP3 (for purposes of Hotfix/Update installs, reporting to QFECheck and the CatRoot2 database, and running certain apps, etc.), folks should know that some MSFT packages can be troublesome if the "spoofed" registry key is used to force installation to an unintended SP level. (This behavior is a complex subject that has to do with dependencies--so generally, proceed with caution.) Nonetheless, forcing a new KB888111 install may not be a problem in this regard.
While overshou's post correctly observes that you have not installed the Conexant modem driver (this functionality is embedded in the same chipset as the audio features), it should not be required before installing the audio driver. Still, go ahead and install the modem (which will create a separate entry in Device Manager).
Your report and screen cap suggest that your Conexant installation is incomplete (and thus, confused). It's best to start fresh to get it right.
Incidentally, unlike the previous release, there are no installer-package problems with v3.64.7.00 for Win XP.
Follow the steps in this post, observing especially the procedures that ensure a clean install.
http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/Conexant-Audio-Driver-for-Vista-4-92-5-and-...
As to your shutdown issue, have you now resolved this problem or does it persist?
Let us know how you make out.
--BAM