Windows 10: Why are my Lenovo laptop internal speakers not working?

Why are my Lenovo laptop internal speakers not working?Volume is turned up.Mute is off.

:)

 

no sound plays through internal speakers

I cannot get any sound to play through the internal speakers of my laptop. It did play previously. The speaker in the task bar has a red and white x and the trouble shooter says no speakers headphones plugged in. When I pull up the info on sound it lists
its location at HDMI port. Suggestions?

 

Internal speakers not working - reg

HI,

I use lenovo ideapad Z570 laptop with windows 7 ultimate version of operating system. I have a problem in fixing the issue on internal speakers of my laptop. When an external speakers or headphone is connected in the audio jack, I could hear the sound. But
when the external device is removed, I couldn't hear sound in the internal speakers of my laptop. I tried in all possible means yet couldn't fix this issue. So, please do help me in fixing this issue as soon as possible.

 

Switching off internal computer speakers

This is a subject that has been raised before but Microsoft seems to refuse to answer. As a result of a previous update to Windows 10, the internal computer speakers work as well as the external sound system. There is no apparent way to switch off the
internal speakers and just have the external sound system working. A previous contributor suggested that Microsoft had a solution to this bug but wouldn't elaborate. This seemed very childish.

I ask the question again: Could someone give a step by step process for switching off internal computer speakers AND leaving the external speakers working. I have tried every setting but nothing fixes the problem. Surely this isn't rocket science and
it would be easy for Microsoft to write a bug fix???

Lack of action just infuriates users unnecessarily.