I am using W10 as o/s on 2 desktops but now can't get email. I can get internet to any other site ok. My provider is Talktalk. This was working about a week ago and I have not changed any settings. PC1 gives the message "Enter Talktalk imac pasword" which I do not know. PC2 works some days but not others and gives the same message or "imac not rcognized" I have spoken to Talktalk who say it is my PC and that has the imac code and not their fault. I think it maybe the router. Both of them developing the same fault seems unlikely. I have also tried a a backup drive with the same result. Trying here as the Last Chance Saloon or I will change provider and router but that is not what I really want.