The user profile service: Service failed the log on. User profile cannot be loaded

The user profile service: Service failed the log on. User profile cannot be loaded

The problem seems like default profile.. This is what we did.
1, Copy C:\users\default folder(Hiden) on the workstation which has no problem to somewhere (i.e. desktop) and rename it to default2.
2, Copy default2 folder to C:\users\ on the workstation which has a problem.
3, go to registory (regedit) HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\Default and change the pass to %SystemDrive%\User\Default2.
4, Reboot the workstation. Then it works fine.
If not then try this:
1. Add user to local Administrators group
2. Log in as user
3. Log off user
4. Log back in as network/local administrator
5. Remove user from Administrators group
6. Log back in as user
7. Success!