To get past a stuck Sysprep pass when configuring a machine follow the directions below.  This may skip some steps of your configuration but it will at least let you login to the machine.  

  1. Press SHIFT+F10 to open a command prompt
  2. type regedit 
  3. in registry editor navigate to:
  4.     HKLM/SYSTEM/Setup/Status/ChildCompletion
  5. if setup.exe is 1, change it to 3
  6. restart