Why has the sound stopped working on my ISeries or CSeries?
If the sound has suddenly stopped working then the most likely solution is that the audio safety setting in the I-Series Control Center/C-Series Hardware Options has become unchecked by an update or another program.
1. Open Control Center (or C-Series Hardware Options)
2. Go To Safety
3. Make sure the Audio and Temperature safety settings are checked and appropriate for the use of the device.
Note: If there is a loud feedback noise then mute your microphone in Sound Settings