To resolve this problem, follow the steps given below:

1. Click Start, type regedit in the Start Search box, and then press ENTER.

2. If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
Locate the following registry subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList

3. Under the ProfileList subkey, delete the subkey that is named SID.bak.

Note SID is a placeholder for the security identifier (SID) of the user account that is experiencing the problem. The SID.bak subkey should contain a ProfileImagePath registry entry that points to the original profile folder of the user account that is experiencing the problem.

4. Exit Registry Editor.

5. Log off the system.

6. Log on to the system again.