I run a network for a small charity, peer to peer networking and internet access via a firewalled router. I recently decided to bin AVG free and trial Outpost Network Security from Agnitum. This allowed me to remotely install antimalware from my network console.
One of the workstations which is used for public access has Windows Steady state installed.
Stupidly I forgot about steady state and remotely installed using an administrator equivelant.
The install failed and when I accessed the workstation on site the administrator account I had used locked me out with the message "Your account has been disabled.Please see your system administrator"
I did not install the original operating system and none of the passwords I believed to be valid will give me access to Administrator, even a null password. At this time no access to the machine is possible as all accounts administrator or limited are locked out.
The machine is a Dell and I have all of the original discs but no recovery disk.
I am not formally trained but have considerable experience of managing networks so can cope with technical issues reasonably easily.