Hi,

I intiatially installed Server 2012 R2 on a box for file sharing in a workgroup environment. I distabled the built-in administrator accunt and set up a new administrator account as well as other user accounts. Things worked fine in a woirkgroup unitl the box was unintionally promoted to be a DC. The box was then demoted using the option of "force the remoival of this domain controller". Now I cannot login.  Anyone have any ideas? (Oh, it is a headless box) . Thanks.