i have a serious problem with the sound in windows 7 .... i formatted my PC and as known , windows 7 install the drivers automatically ... the problem is i heard no sound although the sound card is working good and the icon beside the time is in good shape .... i tried all the solutions at internet , i even reformatted the PC but it doesn't work ...please , any ideas ??
Right click on the icon in task bar and goto playback devices. Check that your soundcard is there and set as the default device. Most likely the hdmi out of your graphics card is the default at the moment.