I have a Windows XP SP3 desktop, Acer Aspire T135 that does not have any sound. The system is up to date with windows updates, DirectX, sound card drivers, etc. The on board audio does not work so I put in a Sound Blaster Live 24 bit PCI card, downloaded the drivers from Creative's site and it doesn't work either. It's listed as the default for things like sound recording and voice recording, but the sound playback area is greyed out.
Originally there was a PCI speakerphone modem installed and that was defaulted as the playback device. Even then, it was the only choice. I have since uninstalled the drivers and removed the modem.
The windows audio service is running and set to automatic. I have run several malware scans with no infections. I am at a loss here as to what happened to the sound. There are no devices listed in device manager, hidden or otherwise, that are out of place for the sound.
With both the onboard and PCI audio device not working, I am guessing there is some shared file that both use that may be corrupt, or a registry entry that is bad, but I'm not sure. Any help would be appreciated since I use the desktop to watch streaming movies and such.