did you search for drivers for the sound card?
Don't use the Device Manager to search for drivers as Microsoft doesn't do drivers well. Instead, go to the computer manufacturer's web site and look for drivers for Win 7 for your make and model of computer.
Hi, I just upgraded my computer from xp to windows 7. now my speakers have noise when you turn them on and off but nothing plays through them. I have checked the device and all is apparently working properly. What can I do to get sound.