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there's no sound on computer

Gwen Ward 0 Reputation points
2026-06-05T01:19:38.5233333+00:00

everything works on my DELL OPITEX 7040 but I cann't get any sound.

Windows for home | Windows 11 | Devices and drivers
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  1. Lester Bernard Reyes 81,100 Reputation points Independent Advisor
    2026-06-05T01:58:12.8766667+00:00

    Hi, I'm Bernard. I'm happy to help!

    Did it work fine before? Typically, desktop devices don't have built-in speakers. Moreover, if it's working fine before, kindly follow the steps below:

    Method 1. Run Audio troubleshooter:

    Press the Windows Key + R, then type in:

    msdt.exe /id AudioPlaybackDiagnostic

    Then hit OK and follow the prompt to run the Audio troubleshooter.

    Method 2. Roll back audio driver:

    Press the Windows key + X

    Go to Device Manager

    Expand the Sound, video and game controller

    Look for Realtek (R) Audio or High Definition audio

    Right-click and click Update Driver

    Select Browse my computer for drivers

    Click Let me pick from a list of available drivers on my computer

    Choose an old driver or another driver name, then select it and hit next until it installs.

    Restart the PC and check.

    Note: If the issue persists, please download and install an audio driver from your manufacturer's website.

    Note: This is a public forum. I may respond shortly, but I apologize in advance for any delays. I am simply a fellow user trying to provide helpful insights and information.

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  2. AI answer

    2026-06-05T01:20:05.0166667+00:00

    Use these steps on the Dell OptiPlex 7040 running Windows 11 to restore sound:

    1. Confirm the correct output device
      1. Select the Speakers icon on the taskbar.
      2. Select the arrow to open the list of audio devices.
      3. Choose the desired output (e.g., speakers or headphones) and test.
    2. Check physical connections and volume
      1. Verify speaker/headphone cables are firmly plugged in and in the correct jack (typically green for output).
      2. Make sure speakers are powered on.
      3. Turn up volume on the speakers and in Windows; ensure nothing is muted.
    3. Check sound settings and that devices are not disabled
      1. Right-click the Speakers icon → Open Volume mixer and ensure no device is muted.
      2. Go to Start > Settings > System > Sound.
      3. Select the output device → Device properties and ensure Disable is not checked.
    4. Set the correct default audio device (especially if using HDMI/USB)
      1. Open Control Panel.
      2. Select Hardware and Sound > Sound.
      3. On the Playback tab, right-click the correct speakers/headphones → Set as Default Device → OK.
    5. Install Windows Updates and restart
      1. Go to Start > Settings > Update & Security > Windows Update > Check for updates.
      2. Install all available updates (including optional), then restart the PC.
    6. Update or reinstall audio drivers
      1. Press Win + X → Device Manager.
      2. Expand Sound, video and game controllers.
      3. Right-click the audio device (e.g., Realtek/High Definition Audio) → Update driver → Search automatically for drivers.
      4. If no update is found or sound still does not work:
        • Right-click the audio device → Uninstall device.
        • Check Attempt to remove the driver for this device (if shown) → Uninstall.
        • Restart the PC so Windows reinstalls the driver automatically.
    7. Try the generic Windows audio driver
      1. Open Device Manager.
      2. Expand Sound, video and game controllers.
      3. Right-click the audio device → Update driver → Browse my computer for drivers → Let me pick from a list of available drivers on my computer.
      4. Select High Definition Audio Device and complete the wizard.
    8. Restart audio services
      1. Press Win and type services, open Services.
      2. Find and restart these services, ensuring Startup type is Automatic:
        • Windows Audio
        • Windows Audio Endpoint Builder
        • Remote Procedure Call (RPC)

    If sound still does not work after these steps, check Dell’s support site for the latest model-specific audio driver and install it, then repeat the default-device and volume checks.

    References:

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