Hi, I am running the dreadful windows 8.1 and I want windows 10. There was no error code just message saying failure to download windows 10. As I said previously, there are dozens of failed downloads, Each time I log in, message says-Undoing failures to download, and when I log off message says- do not switch off your computer,and this happens each time I log on or off. It's a pain. My son says I need to clean up the computer and start again (or words to that effect-I forget, memory not good at 81)