Help! Lost ProfileList reg key. Always logging with default user profile

I somehow lost the registry key HKLM\Software\Microsoft\Windows NT\CurrentVersion\ProfileList.

In fact there is only one reg key under CurrentVersion ( WPAEvents ). So that would explain why when I log in as user "ME" the default user profile gets loaded instead of the one for "ME".

Also, under C:\Users I see folders for all the user profiles including "ME" with all the files there and intact as far as I can tell. So whatever happened it seems like this is an issues strictly with registry corruption.

So my questions are:
1) What might have happened to cause such corruption?
2) Most importantly what are some options for restoring the needed profile keys in the registry?

Thanks for any help.

no-one has any clue or suggestions? really??

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