No Sound from internal speakers but fine with earphones in audio out

Sound is good when using headphones, but nothing from internal speakers when headphones disconnected.

In zoom, no sound when testing speaker, and no input when testing microphone.

When headphones attached can hear sound and mic works.

Cheers Andy Cooke

After what actions did the problem arise? Did you change the operating system after the purchase? Did your system receive updates? Try installing drivers from here.[Ubook] [Official Version] Chuwi Ubook Windows, drivers, EC,download

Windows 10 is having update issues, with audio, there are many complaints in general with the latest update 2020, try to install these drivers:
version 64 bit, and we review. Best regards

Thanks, I’ll give it a go later and let you know. Cheers Andy

Same problem here (Ubook Pro N4100) upgraded to Windows 10 professionell. Click sounds, but works with headphones. Realtek drivers made no difference! No sound via speakers.

install Dolby Home Theatre v4 by Mat Kairos, youtube show, enable .increment volumne