Error after installing DHCP (windows server 2012).

i have first server 2012 domain controller (AD DS + DNS) installed on it. second servers name is srv1(DNS secondary zone on it). i installed DHCP on it. the error i get:

post-deployment configuration

configuration failed for server at SRV1

complete DHCP configuration

when i click on complete DHCP configuration wizard appeared DHCP post-install configuration wizard

specify the credentials to be used to authorise this DHCP server in AD DS

i have two options:

• specify alternate credentials    Username: --------------------- specify      
• skip AD authorization                                                                                                                                                        

when i click on specify it shows: 

username _____________

password_____________

domain:GOOGLE

so when i write administrator in username and put the password. i get username GOOGLE/administrator

then i click on commit. the error comes: cannot open the registry key on target computer to set the status of postconfiguration task. error code 0x8009030e.

how to sole this problem.

regards

Faraz