When purchasing or donating a PC
How to Change the Registered Owner Name on a Windows Computer
When Windows is first installed, Microsoft asks you a series of questions about the owner of the computer on which the operating system will be loaded. Once you choose the owner's name, Microsoft uses this information as the person to whom Windows is licensed.
If you purchased your computer with Windows pre-installed, the manufacturer may have recorded this information for you. If you purchased your computer second-hand, the operating system will display the original owner as the person to whom the operating system was licensed. Either way, with a quick registry edit, you can change the registered owner's name to anyone you like.
To see the name of the person to whom your copy of Windows is licensed, click Start and type