If you have an Audigy card (I have an Audigy 4), the problem seems to be that the default selected is SPDIF out. If you disable SPDIF out, then the speakers become the new default. To do this, click on the volume icon in the system tray, then click on the icon at the top of the volume slider (should be SPDIF out device), then when the properties dialog box comes up, at the bottom select "Don't use this device (disable)".
That fixes it for me...
After a clean install of Windows 7 on an old PC equipped with external speakers the speakers didn't work. This board gave me some ideas. I navigated to Control Panel | Hardware and Sound | Sound. Three sound icons were displayed. The 'Headphones' device was set as the default. The 'no speakers' issue was resolved by selecting the 'Speakers' icon and clicking on the 'Set as Default' button located in the next-to-bottom row of the open 'Sound' window. Thanks to all for the posts on this forum.
I was having the same problem with no sound. This is what worked for me...
- Click on the volume icon in the system tray, then click on the icon at the top of the volume slider
- Go to Properties
- Then Change Settings
- Driver tab
- Roll Back Driver
- Reboot
Works great now. Just using onboard sound (no sound card).