Delete a user in Windows XP, can't find delete button or it's not showing
Solution 1:
Try this command line
net user yourUserNameHere /DELETE
For example, if your test username is "ABCD" you'd run this:
net user ABCD /DELETE
Make sure you're logged on as an administrator of the machine.
Solution 2:
Be sure you're logged on as an admin and that the other account is not logged on.
Solution 3:
If you want to try a different GUI, right-click on My Computer and select Manage. In the Computer Management window select Local Users and Groups > Users. In that view, right-click the User and select Delete.