Hi jazzy null,
If the PC manufacturer does not provide Realtek Audio Console for your specific model, I would not recommend installing it separately. The missing console may simply mean that your device uses a different audio solution.
Since the main concern is the input/output issue, please check:
- Go to Settings > System > Sound > More sound settings.
- Under Playback and Recording, make sure the required device is Enabled and set as Default.
- Open the device's Properties > Advanced tab and temporarily disable Audio enhancements or Exclusive mode, if available.
- Test the audio again.
If the audio device is missing entirely or still does not work after the manufacturer-provided driver is installed, please share the PC make/model and the audio devices shown under Device Manager > Sound, video and game controllers. That should help narrow down whether this is a driver, device-detection, or audio-routing issue.