For new Windows 11 devices like the Lenovo IdeaPad Slim 3i, audio issues after Windows Update are commonly resolved by installing or updating the OEM (Lenovo) audio drivers, exactly as described.
When audio stops working (for example, in apps like WhatsApp) after updates, the recommended steps are:
- Verify Windows is using the correct output device:
- Select the Speakers icon on the taskbar.
- Select the arrow next to the volume slider and choose the preferred speakers/headset under Select a sound output.
- Run the Windows audio troubleshooter (optional but recommended):
- On Windows 11, use the Get Help app via Run the troubleshooter in Get Help to automatically diagnose and fix common audio problems.
- Update or reinstall audio drivers:
- Open Device Manager → expand Sound, video and game controllers.
- Right-click the audio device (for example, Realtek or High Definition Audio Device) → Update driver → Search automatically for drivers.
- If Windows does not find a better driver, download the latest audio drivers from the Lenovo support site for the exact IdeaPad Slim 3i model and install them, as was done successfully.
- If problems started after an update, try Roll Back Driver from the device’s Properties → Driver tab.
- If the OEM driver remains problematic, use the generic Windows audio driver:
- In Device Manager, right-click the audio device → Update driver → Browse my computer for drivers → Let me pick from a list of available drivers on my computer.
- Select High Definition Audio Device and complete the wizard.
- If audio devices disappear or still fail:
- In Device Manager, right-click the audio device → Uninstall device and (if available) check Attempt to remove the driver for this device.
- Restart the PC so Windows reinstalls the driver automatically.
For many OEM laptops, especially after a major Windows 11 update, installing the vendor’s latest audio package (as done from the Lenovo account) is the most reliable fix.
References:
- Fix sound or audio problems in Windows
- Audio issues after win11 25h2 update - Microsoft Q&A
- How to fix this. no audio device is installed - Microsoft Q&A
- My audio inputs and outputs suddenly disappeared, how do i fix this? - Microsoft Q&A
- cannot increase volume even if trouble shooter updates it - Microsoft Q&A