how to fix Microphone?

Hi, good day!

Since Microsoft Support has already tried some troubleshooting steps, could you share which solutions you've attempted so far? This will help me avoid repeating the same steps.

Also, could you provide your laptop's make and model and confirm whether the internal microphone works in other apps, such as Voice Recorder?

Press Start then search msinfo to open System Information

Please take a screenshot of the resulting window and post it in your next response.

I look forward to your update and am willing to collaborate with you until we resolve the issue. Keep me posted by clicking "Add comment" below.

Thank you for updating me with that information. Press Start then search Device Manager

Expand Sound, video and game controllers

Find the Realtek Audio Driver

Right click it and select Uninstall device

Tick "Attempt to remove the driver for this device"

Click Uninstall

After that, download and install the latest Audio driver for your device using the link below.

https://global-download.acer.com/GDFiles/Driver/Audio/Audio_realtek_6.0.9915.1_W11x64_A.zip?acerid=639160634982429652&Step1=&Step2=&Step3=ASPIRE%20AL14-31P&OS=ALL&LC=en&BC=ACER&SC=PA_6

Restart your computer

While this is not a Microsoft website, it is the official site of Acer

You likely have installed KB5124008 update. Some other users reported similar issue after that update. So you can uninstall KB5124008 update to fix the issue that it causes. The KB5124008 update fixes a large number of vulnerabilities, including actively exploited zero‑days. Uninstalling it significantly reduces your security posture, so you should only uninstall and test if microphone (or other critical features) doesn't work and you need them. Here are the release notes: https://support.microsoft.com/en-us/servicing/os/windows-11/2026/09/kb5124008-windows-11-24h2-25h2-security-update

In case you want to uninstall:

1. Open Settings > Windows Update > Update history > Uninstall updates.
2. Uninstall KB5124008
3. Pause Windows Update so it doesn’t get reinstalled, and resume it later when Microsoft has fixed it in an upcoming update.

If this does not work, please try downloading and installing the latest Chipset driver and BIOS update from the manufacturer's support page and let me know how it goes.

Let's install the Chipset driver using Command Prompt:

Open the extracted Chipset driver folder.

Click the address bar in File Explorer, type cmd, and press Enter.

In the Command Prompt window, run this command:

pnputil /add-driver *.inf /subdirs /install

Wait for the installation to finish and check for any errors.

Restart your laptop.

Please let me know if the installation completes successfully or displays an error message.