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Thread: Windows 7 default audio not working but sounds played with third-party software

  1. #1
    entib is offline New Member
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    Aug 2018
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    1

    Exclamation Windows 7 default audio not working but sounds played with third-party software

    Hi Everyone,

    I can no longer control the system sounds of Windows 7 x64 SP1 (6.1.7600600385).
    And the issue is quite weird, unfortunately.


    Summary: Sounds are played regularly by third-party software such as VLAN VLC, Chrome Youtube, Audacity. But System sound files are not played by the Audio control and by all applications that interface directly with system audio/files.

    The motherboard supports 7.1 audio, but actually two standard speakers are connected with the usual jack connector.

    The volume of the Windows traybar Mixer allows me to choose the volume and moving the vertical slider the typical beep is being played.

    The Audio control panel shows Realtek high-definition audio as a selected preset playback device (*).
    However, if I select the Sound tab, any of those system sounds that are predefined (eg Critical Shutdown or Windows logon) will not play any sound with the Play test.

    Instead, from the Windows control panel, opening Audio Realtek HD Manager, the configuration is basic "Stereo" and the test is performed correctly.

    From the Windows Services, the "Audio" service and "Windows Audio Endpoint Generator" are regularly started. Even doing a manual reboot of the latter (which in turn also reboots 'Windows Audio'), does not produce any benefit.

    Note that running a virtual machine with Windows 10 as a client in VMware, until it uses the host sound card (i.e. Windows 7), does not play any sound, nor system sound nor audio of a third-party software. As soon as I select the 'emulated' sound card, it restores the entire audio functionality within the virtual client. Usually such a tweak is not required.



    So there is something corrupted in the files / sound settings of the host system (Windows 7). Unfortunately, there is no Windows 7 restore point available.


    Command line execution with elevated administrative rights (with UAC that obviously does not play any system sound): sfc /scannow gives a 100% perfect result without problems.


    Also the execution of:

    dism /online /cleanup-image /scanhealth ended with a checksur.log within the %windir% \ logs \ CBS path that shows "No errors detected". (Windows6.1-KB2966583-x64 had been previously installed).


    (*) I also deleted Realtek drivers in order to get a clean High Definition Audio Device with Windows 7 system drivers. But the problem remained.

    A summary of the current situation is well illustrated in the following video uploaded to dropbox:

    https://bit.ly/2KZZ4Hu


    Final note: the issue arose after running a "portable" audio / video editing software that probably disrupted system settings or DLLs.

    Any suggestions to regain the control of system sounds/audio, please?
    Thank you for your help.

  2. #2
    Doug_72's Avatar
    Doug_72 is offline Senior Member
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    Jul 2008
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    Provo
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    Run the Playing Audio Troubleshooter for Windows 7.

    More suggestions here - https://www.thewindowsclub.com/no-sound-on-windows-8-7

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