I have a Windows 7 Professional SP1 64-bit laptop.
The problem started when I was logging in, it lead me to a temporary profile. I searched high and low for solutions and decided to follow this one (from Microsoft): http://support.microsoft.com/kb/947215
so I edited the registry as asked and it fixed the problem, but only temporarily.
A day after, I could not log in again, with "The User Profile Service failed the log on. User profile cannot be loaded. So I edited the registry again with the solution from Microsoft.
I restarted, and could log in, but I was shocked to find that even though I DID log in to my User Account (with the password), it was a different profile, with a new desktop. When I click on the "My Videos",etc. on the left side of a window, it was like a brand new account with no files. But when I go to C:\Users\User\My Videos, my files from my admin user account was all there.
I tried to download a picture and when I clicked "Open Folder Location", I saw that it was located at C:\Users\TEMP\Desktop. It seems that although I did log in with an admin account, I am currently using the TEMP account. And this TEMP account is functioning like a normal User Account (i.e. saving files) and there was no pop-up warning about not being able to save files in the temporary account.
Some important info:
When I was changing the registry (after receiving the message of User Profile Service failing) one of the folder's S-1-5....1000 ProfileImagePath was C:\Users\TEMP while the other folder's ProfileImagePath was C:\Users\User. Checking it right now, it seemed that it is still the same, the folder w/o .bak having C:\Users\TEMP while the folder with .bak having C:\Users\User. I am afraid of changing the registry again for fear of destroying the files in my user account.
I cannot do system restore because there aren't any restore points available. I also tried Last known good configuration incase something happens, but so far nothing. Should I edit the registry or is there another way of changing it back?