The login screen on my laptop has always been W*****@************.co.uk. and I know the password. Yesterday, when I started the laptop this login name was not there, in it's place was the name associated with that email. It did not accept the normal password and directed me to the Microsoft accounts page to change it, which I did. Therefore, I am absolutely certain of the password (although, I was certain of it before). However, it does not accept the new password either. This must be because the login name is different. How can I change that? I can't see anything in the accounts page to help me. Why did it make this change? Did it have anything to do with the update to my iphone, done earlier that day? I guess that the accounts are linked. When I closed the laptop that evening, it did an automatic update. When I started it again this morning, the situation is the same. I have done a number of things advised on various fora (like taking out the battery) but nothing has worked. Please help. I don't want to have to buy a new laptop! W10 was installed many months ago and I have never had a problem with it. I know absolutely nothing so any advice needs to be in lay language and very basic, step by step. Thank you very much.