Question Audio Source doesn't change automatically in Win 10 ?

[Cemozi]

Hi People,
I have a Windows 10 system with Creative soundblaster Xi-FI sound Card.
In the past when i open my TV that is connected to My system, the Sound Source was switching to TV automatically.
Now I have do it manually,

I have checked the option but couldn't find there anything.
Is there a way to make it do it again automatically?
Thank you

 

[Lutfij]

How is the PC/laptop tethered to the TV? Make and model of your TV? Specs to your desktop? If it's a laptop, what is the make and model/SKU for said laptop? If the desktop is a prebuilt, make and model/SKU will suffice. Version of Windows 10 at the time of writing?