See if this assists you.
1. Do a System Restore in Safe Mode to before the problem:
http://www.sevenforums.com/tutorials/700-system-restore.html
Getting into Windows Safe Mode. Use Arrow Keys to Navigate and ENTER Key to select Mode
http://www.computerhope.com/issues/chsafe.htm#03
- "Fix "The User Profile Service failed the logon. User profile cannot be loaded." Error in Windows 7"
- Error message: "The User Profile Service failed the logon. User profile cannot be loaded”, when logging on to Windows 7 or Windows Vista
http://support.microsoft.com/kb/947215/en-us
- This may also assist you:
"Fix a corrupted user profile" in Windows 7.
https://support.microsoft.com/en-us/help/14039/windows-7-fix-corrupted-user-profile
Cheers.