No sound in Audacity 2.3.1

I have tried everything, speaker is on Speakers Normal. I am running Windows 10. I even have volume to 100.

Make sure you have selected [u]Playback Device[/u].

Are you trying to play a file?
Do you see the blue waveforms?
When you click Play what happens? Do you see the cursor/marker move? Do you see action on the playback meters?