I am recording the microphone - there is sound, the wave is being recorded. I stopped recording - I turn on the playlist - there is no sound, but there are rare clicks! I save the session, I enter - I turn on the play - there is sound !!!
For the best assist I suggest that you give us some more details… like…
- Cubase version, Computer OS, Audio interface, etc.
- Some screen shots of your audio track showing the track inspector. Also some showing during recording and during playback.