I've made a bit of a boo-boo and disabled the local (built-in) administrator account. This is on a single server installation of Windows Server 2008 R2 Standard edition. The server is standalone at the moment and not joined to any domain.
I was required to create some named user accounts that were supposed to be added to the administrators group, but mistakenly disabled the local administrator account before doing this. Is there a way I can re-enable the local administrator account or will I need to rebuild the whole server again?