Windows: Rename a computer locally and remotely

You can rename a Computer by logging on to the computer or via your admin workstation remotely.

LOCALLY:
1. Open System Properties from Control Panel.
2. In the Computer Name, Domain, And Workgroup Settings section, click "Change
Settings".
3. If you are prompted by User Account Control, click "Continue".
4. On the "Computer Name" tab, click "Change".
5. Type the new name and click "OK" twice to close the dialog boxes.
6. Restart the computer to allow the change to take effect.


REMOTELY:
In Command Prompt, you can use the NetDom command with the following syntax:
netdom renamecomputer machinename /newname:newname  /reboot:30


EXAMPLE:

C:\>netdom renamecomputer PC00100 /NewName:PC00010
This operation will rename the computer PC00100
to PC00010.

Certain services, such as the Certificate Authority, rely on a fixed machine
name. If any services of this type are running on PC00100,
then a computer name change would have an adverse impact.

Do you want to proceed (Y or N)?
y
The computer needs to be restarted in order to complete the operation.

The command completed successfully.