Depending on the quality that you want that could be as little as about 20-30 USD for a pretty decent card. Those with a PCI connection should be cheaper than those with PCI express. Shouldn't set you back too much. I recommend Creative.
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What other sockets?yup, all other sockets have sound ...
This sounds (no pun intended) like it may be a driver or connection problem.My problem is the only sound that is working is the sound made when a user comes online in Windows Live Messenger, nothing else has sound (music, movies, mp3 file) non. Plus I have a 7.1 speaker system and when that sound (mentioned above) happens only the center speaker works!!!
Have you tried the Creative Soundblaster Audigy 2 ZS card in another machine (with the correct drivers)?
If you're sure that (all) the sound devices are defunct, and your speaker system is working correctly, I too recommend just getting a PCI sound card as opposed to trying to repair the old one. For the costs of what you'd have to incur in tools to perform the operation properly, you can get a sound card.
As a last ditch effort, try one device at a time (ie; disable the onboard sound device in the bios), and with the sound card installed in a motherboard slot:
Download, install, and run Everest Home Edition on this machine. (Clean FreeWare) Once it's finished loading and running, look under Multimedia, or, under Multimedia, PCI / PnP Audio. This will tell you what sound devices you have available on your system. Post that information.
Also look under MOTHERBOARD.
Post what is listed for your Motherboard (make/model) and the Motherboard Chipset description.
Then go the opposite way -> Remove the sound card from the machine, enable onboard sound in the bios, then again perform the above.
These scenarios will provide the necessary information to get you the proper drivers to verify the hardware.