I agree with Ashish. This issue is occuring because of symantec installation running through Image Disk.

You can delete the same extra entry and for the feature use the image disk but remove the H/W entry before making the IMAGE Disk

Use the below step

Click on Start button -> Run -> Smc  –stop     Than Press Enter

Enter the Password (*****) to stop the Service

Go to Below Registry path and delete the entry of “HardwareID”
Path - HKLM\SOFTWARE\Symantec\Symantec Endpoint Protection\SMC\SYLINK\SyLink\HardwareID.

Delete the “sephwid.xml” file from below path

Path - C:\Program Files\Common Files\Symantec Shared\HWID

NOTE: The registry value HKLM\SOFTWARE\Symantec\Symantec Endpoint Protection\SMC\SYLINK\SyLink\SySoftk may also need to be deleted if present.

Once the image is applied to a new system, the client will generate a unique id value, check in with its SEPM and register. During the registration process the SEPM will register all necessary client information into the database.

This value will regenerate automatically when the next time client loads.