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Issue: Microphone does not work after headset connected to 3.5mm jack
- Check Dell Optimizer service is running
- If not, then start the service
- If this is still not working, try to install Waves Maxx Audio Tool
- Enable the prompt for 3.5mm jack connected
- Plug in the 3.5mm headset
- Select correct type of headset
- Test it
- Done.