Error instaling Windows 10

Hello @JOSEM17 , Please follow the steps provided below
You can start the VM creation as mentioned in the KB http://kb.parallels.com/4729 but when you are on the screen to select the ISO and continue to select "Locate Manually" then select "Continue without a source" then proceed to select Operating System.
Choose the profile for your virtual machine.
Give a name for the VM and create. You will get a no boot screen.
Use Actions (on Mac menu bar) > Stop.
Now you can see the empty VM on Parallels Desktop Control Center.
Now you can mount the Windows 10 ISO and start the VM which will start Windows installation manually.
Don't enter Windows key during installation select "I don't have a key". You can complete the activation after the installation is complete.
Thanks