Since the problem started after a Windows update and the laptop uses Realtek audio, the supported path is:
- Check Windows Update again
- In Windows 11: Start > Settings > Windows Update > Check for updates.
- In Windows 10: Start > Settings > Update & Security > Windows Update > Check for updates.
- Install any available updates, then restart the laptop.
- Update the Realtek audio driver in Device Manager
- Select Start, type Device Manager, and open it.
- Expand Sound, video and game controllers.
- Right-click Realtek High Definition Audio.
- Select Update driver > Search automatically for drivers.
- Complete the update, then restart the laptop.
- Reinstall the audio driver if updating does not help
- Open Device Manager.
- Expand Sound, video and game controllers.
- Right-click the Realtek audio device and select Uninstall device.
- If prompted, confirm uninstall. On some Windows versions there may also be a checkbox to remove the driver.
- Save work first, then restart the laptop.
- Windows should automatically reinstall the audio driver after restart.
- Try the generic Windows audio driver
- In Device Manager, right-click the audio device.
- Select Update driver > Browse my computer for drivers > Let me pick from a list of available drivers on my computer.
- Select the audio device shown, choose Next, and finish the install.
- If sound stopped immediately after Windows Update, roll back the driver
- In Device Manager, right-click the Realtek device and select Properties.
- Open the Driver tab.
- Select Roll Back Driver.
- Follow the prompts and select Yes.
- If Windows still reports the best driver is installed
- Download the latest audio driver from the laptop manufacturer’s support site for the exact laptop model.
- Install it using the manufacturer’s instructions, then restart.
If the issue began only after the update, steps 3 and 5 are the most directly relevant.