Do this first
Check the basics first
- Restart your Mac. If you see no option to restart, press and hold the power (or Touch ID) button on your Mac for up to 10 seconds, until your Mac turns off. Then turn it on again.
- Enter your Mac login password, not the password, email address, or phone number of your Apple Account.
- Use the correct uppercase or lowercase characters in your password. If your keyboard has Caps Lock turned on, the password field shows a Caps Lock symbol.
- Check the Input menu in the corner of the login window to be sure that your keyboard is set for the correct language.