Reset Lost DRAC Password (without resetting IP Configs)

I have a r720 in a data center where the DRAC password has been lost. I want to reset the

DRAC password to the default (root/calvin) so I can access it remotely and change it. Is it possible

for somebody to post the step-by-step process to reset the DRAC password to default without

wiping out the IP configuration settings?

** Also I'm not sure if this is a DRAC4/5/6/7 because the webGUI also appears to be disabled, so I need to SSH into the DRAC once the PW is reset. So please post any differences for 4/5/6/7.

Thanks,