I'll save you some headaches. Whenever you have general IoT related questions like this, go to this forum for help:
as the Intel people will tell you to go there. But, the default password for the Administrator account for IoT is p@ssw0rd. You can find it on numerous sites. I found that google has been VERY helpful when trying to figure things like that out.
I will take a look at the Windows IoT forum.
BTW, I tried
and I get an error saying that it failed to enable Command Line Processor.