Microphone is not getiing detected,

Because the microphone already appears enabled in mmsys.cpl, open its properties and verify that its recording level is not muted before reinstalling any drivers.

1. Check the microphone level

1. Press Windows + R, enter mmsys.cpl, and press Enter.
2. Open the Recording tab.
3. Double-click the built-in microphone.
4. Open the Levels tab.
5. If the speaker icon shows a mute symbol, click it to unmute.
6. Raise the microphone level, select Apply, and then select OK. This is the next check when the microphone is present and enabled.^1^

The unavailable Set Default option commonly means there is no change to apply—for example, that device is already the default. Continue with the checks below instead of trying to set it again.

2. Test the microphone in Windows Settings

1. Open Start > Settings > System > Sound.
2. Under Input, select the built-in microphone.
3. Select Start test, speak normally, and then select Stop test.
4. Select Play to hear the sample, and adjust Input volume if necessary.^2^

If the microphone is absent from Input, move to the driver steps below.

3. Check microphone permissions

Open Start > Settings > Privacy & security > Microphone, then turn on:

• Microphone access
• Let apps access your microphone
• Let desktop apps access your microphone

If only one application cannot use the microphone, enable access for that application where it is listed.^2^

4. Run the input-device troubleshooter

Go to:

Settings > System > Sound > Advanced > Troubleshoot common sound problems > Input devices

Also check All sound devices under Advanced for additional device options.^2^

5. If Windows still does not detect the microphone, reinstall the audio driver

Uninstalling temporarily removes the audio device; restarting should make Windows reinstall it automatically.

1. Right-click Start and select Device Manager.
2. Expand Sound, video and game controllers.
3. Right-click the audio device and select Uninstall device.
4. If offered, select Attempt to remove the driver for this device, then confirm.
5. Restart the PC.
6. If the device does not return, reopen Device Manager, right-click Sound, video and game controllers, and select Scan for hardware changes.
7. Right-click the restored audio device and select Update driver.^2^

Also check Settings > Windows Update > Check for updates, install available audio-driver updates, and restart. If Windows cannot find a suitable driver, obtain the Windows 11 audio driver for the exact computer model from the PC manufacturer.^3^

If the built-in microphone remains absent from both Settings > System > Sound > Input and Device Manager after reinstalling the correct manufacturer driver, the available information does not distinguish a firmware setting from a hardware failure. At that point, contact the PC manufacturer and provide the exact model and the Device Manager results.

References

1. in-built microphone not detected - Microsoft Q&A
2. Windows 11
3. Windows 11