Use System Restore to a day before the problem.
Hello... I could not find this topic already addressed. I was listening to music on my computer when I opened a Zip file I had downloaded... my Windows Media player shut down, followed by my whole computer shutting down. When I re-booted everything was fine except the computer did not recognize my sound card (C-Major Sigma Tel Audio.)
In Control Panel my Volume Control is greyed out and lists "No Audio Device." The Audio tab is greyed out: "No Playback Devices, No Recording Devices, No Midi Devices." On the Hardware tab I highlight my soundcard: "PCI Bus 0, device 31, function 5- This device is working properly" Under Audio Codecs & Legacy Audio Drivers I get "Location Unknown" but "These devices are working properly." I have tried uninstalling the sound card and re-installing, restarting the audio Services under the Administrative Options tab, and more... the sound was working again for five minutes until I turned the computer off.
I can't get it going again since I turned it back on... any suggestions?