How do I reset a forgotten Administrator password on Windows Server 2008?

I have always used the Nordahl ISO disk

Command line interface and allows you to reset the admin password to no password at all (of course, reset to a complex password afterwards)

Available at http://pogostick.net/~pnh/ntpasswd/

Brian

Hi,

In addition, you could refer to this article for how to reset domain admin password, if you have a copy of the Windows Server 2008 R2 installation disk and one simple command line trick.

http://www.howtogeek.com/106333/how-to-reset-your-forgotten-domain-admin-password-on-server-2008-r2/

Regards.