A picture of the keyboard is preventing me from logging on my MacBook Air

That's actually normal behavior. All my Macs have that at the log in screen. What happens when you try to sign in? If it jiggles that means the password you are entering is incorrect. Are you getting an error message?

If you forgot your password or it's not working try these steps: https://support.apple.com/guide/mac-help/reset-your-mac-login-password-mh35902/mac#:~:text=Reset%20your%20login%20password%20using%20your%20Apple%20ID&text=Click%20the%20question%20mark%20next,it%20using%20your%20Apple%20ID.%E2%80%9D

If that doesn't work try this: https://support.apple.com/en-us/HT212190

Bevedh wrote:

In the upper right hand corner of my Mac I see ABC next to a picture of the keyboard. This is preventing me from logging on.

What language keyboard do you normally use? ABC is just standard English. If you click on that icon you should see others you can choose.

Can you provide a photo of what you're seeing?