- Boot onto DVD of Windows Server 2008
- Choose “Repair your computer”
- Launch cmd
- Go to c:\windows\system32
- Rename Utilman.exe to Utilman.exe.bak
- Copy cmd.exe to Utilman.exe
- Reboot on Windows
- Do the keyboard shortcut Windows + U when on the logon screen
- net user administrator Newpass123 inside the cmd
- log on with the domain admin account and this new pass
- change the password to remember it if needed
- Reboot on the DVD to put back the original Utilman.exe