Proliant DL 160 G6 ,The user's password must be changed before logging on the first time

[lim kee seng]

after i boot from window 2008 server R2 os installer cd..(why didnt ask me for key-in the 25 digit product key and also what user name and password i wanna it before installation is finish and reboot)
now the welcome screen is prompt it and ask me for login the Administrator and password..
the messange show.. The user's password must be changed before logging on the first time..
i didnt create password so i leave it blank and login as Administrator as default press next the messange prompt again..
Unable to update the password. The value provided for the new password does not meet the lenght, complexity, or history requirments of the domain..
So.. any solution can helping me..

[Jon Finley]

The Administrator password is by default, blank right after install, so the first time in, you have the set a new complex password. any 8 chars with mixed upper/lower/number and special chars will work. Example: Pa$$w0rd!

Server 2008 and 2008/R2 both want to talk to a KMS server by default. Once you're logged in as a local administrator, right click on "Computer", select properties, and towards the bottom, select to change the key. Imput the one you received and activate it.

Jon