Failed to play test tone

If you got alert message while trying to test is sound is working or not.

For couple of days i noticed that something is wrong with sound. Sound disappears while calling in skype. Sound appears after a while "somewhere" else.. or not.

Drivers reinstall didn't helped.

I dont know why is not working but here some method which might help you to solve the problem.

I recommend to try method 3. Also please comment for other visitors... which method worked for you. Thanks a lot :3

Method 1 ( some people say helps.. )

1. Go to control panel
2. Double -> Click on the Sound Icon
3. Single -> click the Speakers to highlight them
4. Click on Properties (bottom right corner)
5. Go to the Enhancements Tab and Click on it
6. Now click "Disable All Sound Effects"

Method 2 ( helped me but for a while )

1. Start -> All programs > Administrative tools
2. Open services.
3. Navigate to "windows audi".
4. Right click on it and click "Restart".

Method 3

1. Start -> Run -> "regedit"
2. Go to HKEY_LOCAL_MACHINE /SOFTWARE/Microsoft/Windows /CurrentVersion/MMDevices /Audio/Render/
3. Goto the following key in registry {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}. I had 4 of these ones... Open these onces until you see - FxProperties. Click it.
4.a In the right hand side of the registry window change the value of {1da5d803-d492-4edd-8c23-e0c0ffee7f0e},5  -> (value type is REG_DWORD) to 1 (one) instead of 0 (zero).
5. Done.

4.b INCASE YOU DON'T FIND THE ABOVE MENTIONED KEY UNDER fxproperties, PLEASE CREATE IT BY YOURSELF. (COPY & PASTE
{1da5d803-d492-4edd-8c23-e0c0ffee7f0e},5
TYPE IS REG_DWORD AND PUT VALUE 1
The audio start working at the moment you change the above value !!! (even before closing the registry editor).