Assuming its not a hardware problem (that would require replacing motherboard) my only other suggestion is to reset (reinstall) back to original.  
Im facing an issue with the audio jack pop up. I have uninstalled and re-installed the specific driver for this laptop. Dell 7390 Windows 10. all updated.  When i plug in headphones or headsets, it doesn't recognize the insert. so it plays at a ridiculous sound. I have tested it on another 7390 and the pop up comes and if u select headphones or headset it plays as it should.  so the issue is Waves Maxx audio Pro is not picking up my insert into the headphone jack.    any assistances or fixes? will appreciate. 
Latitude 7390 audio jack issue