Why doesn’t my desktop PC have audio?

17 May 2012
Explorer 9
17 May 2012 | Windows | Explorer 9

I have no volume what so ever on my computer now.
It hasn’t been muted.
I have had it turned up to full volume.
Gone to Control Panel, Sound, clicked Sounds then under Sound Scheme put it to Windows Default, Apply and OK
Gone to Control Panel, Trouble Shooting, Hardware and Sound and clicked on Troubleshoot audio playback.
Clicked on Volume icon, Mixer and pushed all three buttons to the top.
All my computer cables are firmly in place.

I don’t know what else to try.

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