Originally posted on GirlyTechStuff:
Many people familiar with prior versions of Windows are curious what happened to the Local Administrator account that was always created by default. Does this account still exist, and how can you access it?
Recently I ran into an awkward situation where after disjoining a Windows 7 client machine from the domain, I was unable to log in to the computer. This was not because I had forgotten the local administrator password, but because the local administrator account was disabled (which is the default behavior in Windows 7). Like in Windows Vista, in Windows 7 the built-in Administrator’s account is disabled by default. Furthermore, this account is not associated with any password. After doing some research, I found the following procedure that worked really well.