Audio Issue

Hello, thank you for reaching out to the Microsoft Q&A.

If you are experiencing the 'No audio output device installed' error, it usually indicates a driver issue.

1. Open the Device Manager.
2. Expand the arrow next to Sound, video, and game controllers.
3. Right-click your default audio driver (Realtek R), select update driver > Search automatically for available drivers, and click update.

If Windows cannot find any recent updates for your device, right-click the default audio driver- Relatek (R) audio driver, select Uninstall device, select the Attempt to remove the driver for this device check box, and then select Uninstall.

Once uninstalled, restart your computer and check the audio output.

Let me know if you still need more help.

Dear Kunj Chhatriwala

Thanks for reaching out! Welcome to Microsoft Q&A. I'm Haien from Microsoft Q&A.  

The core of this problem is that your operating system is failing to detect an audio output device. This can be caused by a variety of factors, but the most common one is an issue with the audio driver. The driver is the software that allows your computer's operating system (Windows) to communicate with its sound hardware (the sound card or integrated audio chip):

Solution 1: Reinstall the Audio Driver

• Right-click the Start button and select Device Manager.
• Expand the "Audio inputs and outputs" or "Sound, video, and game controllers" section.
• Right-click on the Surface audio device (it may be labeled as "Realtek(R) Audio" or similar) > select Update driver > Search automatically.
• If unresolved, Select Uninstall device. If an option appears to "Delete the driver software for this device," check that box.
• Restart your Surface. Windows will automatically detect the hardware and reinstall a fresh copy of the driver

Solution 2: Run the Audio Troubleshooter

• Go to Settings > System > Troubleshoot > Other troubleshooters.
• Select Recording Audio and click Run to diagnose microphone issues.
• Select Playing Audio and click Run to diagnose speaker issues.
• Follow the on-screen prompts to apply fixes.

For additional information about fixing audio problems, please visit this article to know more: Fix sound or audio problems in Windows - Microsoft Support

Please keep me updated with anything new that you were try to each option.

To assist others who might have similar questions and to help us improve our support system, we kindly encourage you to "Accept the answer" if it successfully addressed your concern. Accepting an answer lets other users know that this solution worked for you, and it also helps us track the effectiveness of our support efforts.

We appreciate your patience and look forward to resolving this quickly for you.

Warm regards

Dear Kunj Chhatriwala

Welcome to Microsoft Q&A. I'm Haien from Microsoft Q&A.

May I ask if you have tried my suggestions for your case? I hope you can keep me updated on your issue in the future.

Your satisfaction is Microsoft's priority.

Warm regards