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TRIED TO LOGON BUT USER PROFILE FAILED LOGON?Unable to acsess systerm

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Hi bridgetharri,

This issue will happen if the User Profile in the Computer is corrupted. You will need to edit the Registry to fix it. It is recommended to backup the registry before start editing it.

  1. Restart the Computer in the Safe Mode (press the F8 Key while restarting the Computer to access the Safe Mode.
  2. Please open the Run window, type Regedit and press the Enter Key.
  3. Click on "Continue" (Vista) or "Yes" (Windows 7) when prompted.
  4. To backup the registry, on the Registry Editor Windows, click on the "File" option, select "Export".
  5. At the bottom of the open "Export Registry File" window, please make sure that the "All" option is selected.
  6. Please type any file name and save it.
  7. The next steps include the editing of the registry.
  8. Please access the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList Key
  9. You can click on each folder name on the left pane of the Registry Editor window to open each folder.
  10. In the left pane, when you expand the "ProfileList" folder, look for the S-1-5..... folder (SID key) with the long number that has .bak at the end of the numbers.
  11. In the right pane, look at the ProfileImagePath to verify that this is the user account profile that has the error.
  12. You may have another S-1-5..... folder (SID key) above it with the exact same number without the .bak at the end of it.
  13. This is if you have two S-1-5..... folders (SID key) with the exact same numbers, but the second (below) one has the .bak at the end of the numbers.
  14. In the left pane, right click on the first (top) S-1-5..... folder (SID key) that does not have .bak at the end of the numbers and click Rename to add .bk to the end of the numbers.
  15. In the left pane, right click on the second S-1-5..... folder (SID key) with .bak at the end of the numbers and click Rename.
  16. Remove only .bak from the end of the numbers and press Enter.
  17. Now go back and Rename the first one with .bk to .bak now at the end of the numbers and press Enter.
  18. In the right pane of the one without .bak now, right click on RefCount and click on Modify.
  19. Type 0 (number) and click on OK.
  20. If you do not have RefCount, then right click on a empty space in the right pane and click New and DWORD (32 bit) Value, then type RefCount and press Enter. This value for this entry will reset and return back to the original value after you have restarted the computer and logged on to the account.
  21. In the right pane of the one without .bak now, right click on State and click on Modify. (This value for this entry will reset and return back to the original value after you have restarted the computer and logged on to the account.)
  22. Type 0 (number) and click on OK.
  23. Close the Registry Editor Window and restart the Computer.
  24. Now, you will be able to login to your User Account.

Hope this helps..

Good Luck!!

Please post for clarification or further assistance.

Thanks for using Fixya.

Posted on Oct 02, 2010

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