No Sound issue in Windows 8 Consumer Preview

Problem:-

I have upgraded my OS from Windows 7 Home Premium to Windows 8 Consumer Preview. Since then I am not getting any sound.

Resolution:-

Generally this problem is associated with audio driver. As Windows 8 Consumer Preview has not launched finally so there may be problems with audio driver.

1]First try to install the necessary driver via Windows Update.

2]Uninstall and reinstall the audio driver. Right click right-click on the driver, and select Troubleshoot Compatibility.

Click Try Recommended Settings, and in the next window, click Start the Program.

3] Open Control Panel. Click on Sound icon. Make sure Speakers are set as Default Device.

4] Type in Services.msc to open Services (Local).Here check the following services have started and running. If not right click on each and select Start. :-

.       Windows Audio

•      Multimedia Class Scheduler

•      Remote Procedure Call

•      Windows Audio Endpoint Builder

5] Sometimes if you get  error 1297  when starting audio services:-

Open cmd and right click on it and select run as Administrator and type in the following command:-

secedit /configure /cfg %windir%\inf\defltbase.inf /db defltbase.sdb /verbose

Hit Enter Key.

6] Reboot.