Are there any free sound card diagnostic software available?

[luckiejacky]

The onboard sound of my mobo seems to break down.
Any there any free software to let me check if it's still working?
Thanks
Jack

 

[Scott_D_Bowen]

Windows comes with built in sound/audio diagnostics.

Do you have a speaker icon in the bottom right corner of your screen?
Try left/right clicking it.

 

[luckiejacky]

The icon is there. And I can see the sound amplitude jumps up when I play back sound clips.
But the actual output sound is extremely tiny.
The sound is also one-sided and hissing
Thanks
Jack

 

[Scott_D_Bowen]

Try half unplugging the 3.5mm audio jack until you feel friction.
This might restore stereo sound at the normal volume.

 

[hang-the-9]

The icon is there. And I can see the sound amplitude jumps up when I play back sound clips.
But the actual output sound is extremely tiny.
The sound is also one-sided and hissing
Thanks
Jack

That is most likely a bad speaker or jack not the sound card.