Used the Windows All-in-One Repair tool today. When i eventually got to the "Repair" section, the screen recommended re-booting to Safe Mode. I did this and, when the new screen was displayed, it asked me to enter my password. I entered my usual password and it was not recognised. I then entered every password I have ever used (I keep a VERY secure record of these!) and to my surprise not a single password was recognised. I had no choice but to restart in "normal mode" and continue the repair. Everything worked in the end but I am curious to know where I went wrong. Incidentally, when all was finished a message displayed to the effect that my Windows Security Service Centre was switched off. I attempted to switch it on and it was not accepted. After jumping through a lot of hoops, I restarted the system and, lo and behold, the problem was fixed. An on-screen warning might help with these problems. This is a great programme - I really like it.