I need to rejoin laptop to network

Network protocols
Performance management
I have a Toshiba laptop that the motherboard quit working properly. I removed it from the network SBS 2003, deleted it from Client computers). We recently replaced another Toshiba laptop (same model) and I put the harddrive from the recently retired laptop into it and am now trying to rejoin it to the network. I get an error message about conflicting credentials. I have renamed the computer and tried administrator logins to no avail. We use DHCP and obtain IP address automatically. Is that possibly where the problem is? Does the network and harddrive use the old IP address causing this?

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A – DHCP is NOT the problem.
B – Conflicting credentials is the problem.
C – Did you mean to say that you went to “Active Directory – Users and Computers” and in the list of computers you deleted the named instance of the retired computer? The computer that failed (motherboard/hard drive)? Or both?
D – Presuming Windows XP Pro on the laptop, login as the local administrator on the laptop. Does not need to to be connected to the network. Right click ‘My Computer’ and choose properties. On the ‘Computer Name’ tab change it to workgroup not domain. You may get a request for domain credentials, or an error message that the domain controller could not be contacted. Proceed, and it will switch to workgroup. This will require a restart. Log back in as local administrator and go to the same tab, but this time change the name to something unique and not related to either previous incarnation. This will require a restart. Attach a network cable and log back in as local administrator, go to the same tab and join the domain. You will be prompted for an account/password set with the permissions to perform the join (members of the ‘Account Operators’ group). It may take one to five minutes for the ‘Welcome to xxx domain’ to appear, depending on network speed and the number of computers in the domain.
And it is time to restart again.
E – Forcing a name change on a disconnected computer is the only dependable way to clear identity crisis for computers in a domain.

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  • Nileshroy
    Hi !! I am NOT 100% sure, but i guess the root cause of your problem lies in a duplicate SID in the SAM database. Follow the steps in the MS KB article given below & resolve ur problem. http://support.microsoft.com/default.aspx?scid=kb;en-us;q315062&sd=tech Let me know if it helped you. Regards, Nilesh Roy. nilesh@nileshroy.com
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  • Sheldonrw
    I have had this problem before and its really quite a simple fix. You have to log on the the computer as the administrator. Not on to the domain but log on to the local machine. Once you have logged on to the local machine with the administrative username and password you can then go to the network setting and joing the laptop to the network. Give it a bash and let me know what happened
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