SLMGR isn't something you need to use. This is the tool used for manipulating Windows Activation status.
https://technet.microsoft.com/en-us/lib ... 02540.aspxIf you have a retail Windows disc, wiping the existing PC and using that disc on another PC is perfectly legal. During activation, it is unlikely you will need to perform any extra steps, but even if you need to call, it can be done.
If your Windows disc is an OEM disc supplied by the PC maker, it is tied to the machine it came with and cannot be used on any other computer.
-steve
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stephen boots Microsoft MVP 2004 - 2020
"Life's always an adventure with computers!"