how to fix no sound

Hi, I'm Bernard, a fellow Windows user. I'm happy to help!

I understand the issue you have. There is nothing to worry about. I am here to assist. Are you using a Desktop PC or a Laptop? Typically, desktop devices or Tower PCs don't have an external speaker installed, and you need to purchase an external speaker. If you are using a laptop, 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.

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

Open Device Manager, and make sure you've audio drivers installed and properly working.

You can visit your device manufacturer's website to download audio drivers for your system model.

Try updating audio drivers to latest version.

Or if you've already updated them, try to roll back previous version to see if that works.

Run Playing Audio troubleshooter from Settings app > System > Troubleshoot > Other troubleshooters. Let us know what it reports back.

Also, refer other suggestions here:

https://www.kapilarya.com/fix-no-audio-output-device-is-installed-in-windows-11

Let us know if this helps!

Note: Included link in this reply refers to blog by a trusted Microsoft MVP. 

To fix the issue of no sound and the message indicating that no audio device is installed, you can follow these steps:

1. Check Device Manager: Open Device Manager and look for any audio devices under "Sound, video and game controllers." If you see a yellow exclamation mark next to any device, it indicates a problem with the driver.
2. Install Audio Drivers: If no audio devices are listed, you may need to install the audio drivers. You can do this by:
   • Visiting the manufacturer's website of your audio device to download the latest drivers.
   • Alternatively, you can use Windows Update to search for and install the appropriate drivers.
3. Use PnpUtil to Install Drivers: If you have the driver files, you can use the command prompt to install them. Open an Administrator command prompt and type the following command:

      pnputil -i -a <driver_file_name>.inf
   

   Replace <driver_file_name> with the actual name of your driver file.
4. Restart Your Computer: After installing the drivers, restart your computer to ensure the changes take effect.
5. Check Audio Settings: Go to Control Panel > Hardware and Sound > Manage audio devices. Ensure that your audio device is set as the default device.

If you continue to experience issues, consider checking for Windows updates or consulting the device manufacturer's support for additional troubleshooting steps.

References:

• Windows 10 doesn't install specific drivers for USB audio devices on the first connection
• Install and test the driver