kritika yadav wrote:
There is no user to select.
And i have rebooted it many times. It is still asking for name and password.
I remember my password. And whenever i type that it is saying it's incorrect.
The login window can be set in one of two modes: "list of users" and "username and password".
Your mac is using the latter, so you have to *type* the username and the password (until you can log in and change your settings, naturally).
Are you sure you typed the userNAME exactly? In macOS there are two versions, the "short" name and the long name.
You have to type one of them exactly, and, of course, the password also.
For example, your long name may be something like "Kritica Yadav" and your short name (the one that will show next to your home icon in a Finder sidebar) may be something like "kriticayadav" (the short name can't have spaces and is usually all in lowercase, but that is not mandatory). Just giving you an example, of course, I have no idea what name you chose when you created your user account.
If you still can't log in then follow the instructions I gave you before for resetting the password.