No sound from Wavelab 8 Elements although Master Level shows sound playing

When I booted up my Dell Win10 pc this morning and opened WL 8.0.4 to start editing a file I got no sound from the pc although the level meter showed that sound was playing. The system worked perfectly yesterday. I removed the program via the control panel and re-installed the latest software from the Steinberg web site and still nothing. the sound works perfectly with other programs on the pc. I also compared the settings with another laptop running the same version of WL Elements and everything looks the same. I also compared the VST settings with a working Windows 10 laptop and everything was set the same. I am at a loss as to what to do to fix this issue. Any help would be greatly appreciated!