How to rest the password on Windows Server 2008 R2

hi

my assistant changed password on windows server 2008 r2, doesn't accept it. don't have installation disc. guy set me never gave me server disc.

so, how can change password on windows server 2008 r2 without disc?

if that's not possible without disc, can one?

thanks in advance.

please refer marked answer in thread:  how crack windows server 2008 r2 or windows server 2012 local admin password

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best regards, todd heron | active directory consultant

Windows Server  >  Security