Lost User Icon on Win 7 Welcome screen

Question

My welcome screen changed on it's own.  We have two users accounts which have been displayed on the welcome screen for the past year.  Now only the last user account and a blank "other user".  Neither of the accounts require passwords. 
How can I re-establish the welcome screen to display both user accounts?
FYI: I noticed the problem shortly after I upgraded my Skype account.

Answer 1

Hi,
First of all, we could try system restore to get back to a previous time point which everything worked fine.
If this issue persists, please try the following steps to check how it works:
Note: before perform this action, please
Back up the registry firstly.
1.   
Type
regedit in start search box, press Entre and YES.
2.   
Navigate to [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList].
3.   
You will probably want to right-click on “ProfileList” and click export to save the entire subtree in case something goes wrong.
4.   
You will find several subfolders or “keys” named something like “S-1-x-xx…”, open them one at the time.
5. 
Each should contain at least the three value-sets, “Flags”, “ProfileImagePath” and “State”, some will contain more.
1)  
Look at the end of ProfileImagePath for the name of the user represented by the key.
2)  
You will usually have one for each user on the system, and one for each of the three system entries ‘systemprofile’, ‘LocalService’ and ’NetworkService’.
6.   
Delete any key (i.e. the whole “S-1-x-xx” folder) that does not contain at least those three values.
7. 
Reboot to check the result.
Alex Zhao
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