Okay,  there IS a solution as it turns out. These steps were performed after the ncg directory was deleted as noted above.    It turns out Dell has facilitated Windows repairs through its site.   The first clue was that Dell's site did not recognize my computer when I went to use their self-serve software support.  So this was what happened:1.   Reboot the computer into BIOS (pressing F2 during boot)2.   Assign service tag to new motherboard using the prompts,  save and exit3.   Go back to dell and use service tag to re-flash the BIOS using the software from Dell that is associated with your PC tag4.   Restart the computer. 5.   Using Windows Update Assistant,  Update windows. 6.   Many restarts later you should be able to set the PIN. (Note: This worked in one particular case, however it may not be the same in all cases).    
Hello, Just got a new Alienware less than a month ago.   It blew out after 8 days and Dell came out and replaced the motherboard and then again to replace the GPU.   I am now unable to set the Windows 10 PIN to log into the computer.  I have to think this has something to do with the motherboard replacement.  What is the process for getting the PIN to work after replacing the motherboard?Symptom:  When I go to sign-in options I click the button to ADD a pin (there is no "REMOVE" button)  it asks for my password, which I provide, but then absolutely nothing happens.    The little spinning circle appears for a fraction of a second and then nothing. I have tried the following:1.  Deleted the  Windows ncg directory.      2.  Running DSIM repair.   This produced an error that the "Source was not found"  Any assistance would be appreciated.  Thanks.
Unable to set Windows PIN after Dell repair on new PC