Audio devices connected, Cubase shows output but no sound

I have recently installed Cubase LE Elements 9.5 and I can’t get any audio output. I have connected the bus in Audio Connections and assigned the ASIO driver but there is no output to the speakers or headphones. I am using Realtek in-built sound card and I can’t see any reason why no sound would be outputing. I have looked at several other forums but none seem to have the same problem. I have tried playing audio from midi and .wav audio files and both show an output in the bottom right hand corner, both outputs also have say Active in the ASIO driver on the Studio Setup panel. I am using Realtek Digital Output for both so I cannot see why nothing is working.

Any help would be massively appreciated as I have connected all the other parts of my recording set up and really need to get this working!