We bought a used computer for our son. I have managed to change the name of the computer from the former Yvonne to one I have selected. However, the User name keeps coming up as Yvonne in Windows Explorer. This is confusing because we sign in under his last name and file that way. I get the warning error 0x80070057 parameter is incorrect when I try to change the user name for these files. HELP
Rosie1st