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Vista x86 sp1 update disabled my audio from functioning ...
https://social.technet.microsoft.com/Forums/en-US/c8f38aff-bb3f-4eb9-9d98-ac488c42d12e/vista-x86-sp1-update-disabled-my-audio-from-functioning-properly
After Vista SP1 installed, my Speakers/Headphones went silent yet the driver was still there and functioning properly. I uninstalled the driver, and let Windows auto-install another driver. (No Rollback was available) I was able to get sound from my Speakers. Speakers are the only thing that work whether I plug into the headphone jack or not.
"No audio devices installed" message after Vista SP1 ...
https://social.technet.microsoft.com/Forums/windows/en-US/cc065c43-cbba-470b-878c-dfee6f5e4f6a/no-audio-devices-installed-message-after-vista-sp1-installation
I unsinstalled SP1 and after I restarted Windows said that the driver was successfully installed but that was not the case. When I look in device manager I see an Other Devices category with Audio Device on High Definition Audio Bus. When I look at the properties this is what I see: The drivers for this device are not installed. (Code 28)
Sigmatel/Vista SP1 Issues - Dell Community
https://www.dell.com/community/Laptops-General-Read-Only/Sigmatel-Vista-SP1-Issues/td-p/2815017
Why Dell hasn't released new drivers for all systems already, seeing as though SP1 has been in development for quite sometime, I don't know. So, I tried the other Dell drivers (for various other systems with the same sound chip) that have been suggested on the forum, but they just won't install.
Sound Vista After SP1 - Vista Forums
https://www.vistax64.com/threads/sound-vista-after-sp1.152515/
Hi: I have Vista x32 SP1 installed. The installation went fine, but I have noticed after the Conexant HD Audio driver update I had a no-sound issue. This went away after a restart. I then installed SP1 via WU and I again had a no-sound issue. …
Download Windows Vista Service Pack 1 All Language ...
https://www.microsoft.com/en-us/download/details.aspx?id=13158
Windows Vista Service Pack 1 (SP1) is an update to Windows Vista that addresses feedback from our customers. In addition to previously released updates, SP1 will contain changes focused on addressing specific reliability, performance, and compatibility issues; supporting new types of hardware; and adding support for several emerging standards.
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