I made some VM´s using Windows 2008 R2 one year ago. I forgot the admin password.
I follow this steps to recover:
- Boot from the Micrsoft Windows Server 2008 DVD
- From the Install Windows menu, click “Next�.
- Select “Repair your computer�
- In the System Recovery Options, select the Operating System instance that you wish to repair and click “Next�.
- Select “Command Prompt�. The
- At the command prompt, run the following commands:
c:
cd windowssystem32
ren Utilman.exe Utilman.exe.old
copy cmd.exe Utilman.exe - Reboot the server allowing Windows to load as normal
- At the logon screen, press Windows Key + U.
- As the command prompt, enter the following command:
net user administrator