Problem when logging in (El Capitan)
First of all, sorry for my poor English, I'm not a native speaker and also not very tech-savvy.
Last month I bought a Macbook air from my mom. She had an admin account which I will name "X".
While using her account, I created a new admin account, then logged in on it and the deleted my mom's admin account.
The thing is, every time I reboot my Mac, the first log in page I see shows my Mom's account. Only after entering with her password I get to see my Login Account asking this time for my password.
What do I need to do to delete my mom's account once and for all?
MacBook Air
El Capitan version 10.11.5
MacBook Air, OS X El Capitan (10.11.5)