I have Windows 7 Home Premium, SP1. I have several user accounts, and have never had any trouble creating new accounts previously.
However, I've just created another new account, and when I try to log on using this new account I get the error:
"The User Profile Service service failed the logon".
A google search showed that this is a well-known and well-documented problem, so I started following the steps in KB947215. But I've discovered that there is, in fact, no entry at all in the ProfileList registry key for this user. There are entries for all the other users, but not for new users that I create. I can't seem to find any other reference to this particular problem - everything I've found online assumes that there is a faulty registry key that can be fixed, and doesn't deal with the possibility of there being no registry key at all.
Any help would be appreciated!