Mac Laptop (Catalina) seems to load Parallels 15.0.0 (Trial) but seems unable to load Win10 (Trial)

Hi.
I have decided to return to Parallels using my new new APple laptop running Catalina.
I have downloaded Parallels 15.0.0 (trial) and a WIn 10 ISO file (trial)
Although I have been able to control Parallels, it will not launch WIndows. A screen aooears but whebn I indicate that I wish to proceed, the WIn load screen just flickers away - seemingly forever.
AM I doing something wrong?
.

 

Hi, did you install Windows and got a black screen?
Could yo please share the screenshot of your VM?

 

Hello.
In the end I uninstalled the whole lot, rebooted and started the installation processes for the umpteenth time. I must have done something right because it appears to be working ok now.
Thanks