You need to reinstall the drivers for your sound card. If you don't have the CD, check the website of the vendor that made the card. (IE: Creative Sound Blaster)
Joanie, July 2006
Your computer can't detect speakers. The audio device that it can't detect is your sound card.
Terry, June 2006
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I can answer this question...
My speakers are plugged in but my computer can't detect them?