yes you are correct in what you say, it has taken many posts to get there!
Sorry I do not know where the Ransomware came from, but I just followed the instructions on here to run Rkill and Malwarebytes. Nobody asked me to try and find out a name of anything, and I was not even aware of anything called Ransomware, I thought I had just some sort of simple virus.
As everything now seems to be working correctly, I assume there is no way of knowing where the Ransomware came from?
The emails I have rescued, but have lost all my data files, doc, xls, jpg, etc and there numerous other 'locked' files all over, but I am not sure what they are.