https://de.ifixit.com/Antworten/Ansehen/418146/Seem+to+have+lost+one+speaker+after+a+Windows+update
Seem to have lost one speaker after a Windows update - HP Pavilion DV7-4065dx - iFixit
Lost performance from one speaker. It was coincidental with a big Windows 10 update. Do I need to replace the speaker? - HP Pavilion DV7-4065dx