Hi SUBIND,
Thank you for reaching out to Microsoft Community.
Please follow these steps to troubleshoot the issue:
Open Control Panel > Hardware and Sound > Sound
Under Playback tab, see if the Digital Output Device (HDMI) is on the list
If not, right-click on an empty area on the page and checked Show disabled devices and Show disconnected devices options
Once you have the Digital Output Device (HDMI) on the list, right-click on it if it shows disabled then choose Enable
Once enabled, select then click Set as default > Apply
Try then to play a sound and see audio will now come from the TV speaker
If still issue persist, please see this page for more details to Fix sound problems in Windows 10.
If this answer your question, we highly encourage you to inform our Community by clicking on Yes or marking my post as an answer. This will help other members who may have the same issue as you. Otherwise, don't hesitate to update us so we can further assist you.
Kind Regards,
Marrion Y.