How do i changed the registered name on my pc?

when i bought my laptop i registered it in my name, now we would like to sell the pc but can't figure out how to change the registered name. i have a HP pavillion laptop.. i tried to call HP but of course English isn't their first language and can't understand meHow do i changed the registered name on my pc?
When you click start, click on the picture next to your current name. Then a window should pop up about changing your account picture but click the Home button near the top and then it will bring you to a page where you can change your account details.How do i changed the registered name on my pc?
make a new user from the control panel menu ....user account

and make it an administrator
shows you how on the link below, seriously. I'd explain but its a lot of typing, I guess i could copy and paste though duh



HKEY_LOCAL_MACHINE\Software\Microsoft\…

Look in the right-hand pane for the String RegisteredOwner

Note down what it says.

Right-click and click Modify

Type in what you want.

It should take effect immediately.