The letters (and only the letters, numbers work) on my Lenovo IdeaPad are not working at all

Nice to meet you, *****!
So, your keyboard only registers numbers, right?

Could you tell me the model of your IdeaPad?

Thanks a lot.
It seems like your keyboard has a NumPad. Could you please check, if you see a "Num Lock" button near a "Backspace" and "Enter" button?

Could you tell me if it has something like a white light near it or right exactly on this button?

Please, try pressing this button, so the light comes on

And check if you can type in any letter

Then, try turning it off and check if letters work again

Got it, just to be clear, have you installed any Comcast apps on your laptop, like "Constant Guard"?

Thanks for clarifying that
Could you please check if you can type in any letters while holding the "Fn" button? It is located right near "Windows" button.
So, you just hold down the "Fn" button and press any of the letters

Got it. Could you please power off your Laptop and remove a battery from it for a few minutes, then plug it back in?

Have you got any external keyboard near you?

It should be able to work this way

Just to be clear, have you got a PIN password set up in your system?

Could you please try restarting the laptop and tell me what comes up on the screen?

Take your time, I'll be waiting for your reply :)

Could you tell me, do you see something like a PIN input field?

Could you tell me, if you see any other buttons on the screen? Like "sign in options" area?
Could you click on it your cursor over the pictures in the "sign in options" area

Could you click on "Sing In Options" button and tell me what do you see?

Please, try clicking on the "Microsoft Account Password"
And check if you can type in your letters after it, please

I understand that, but it may be the only option

Just to be clear, is your PIN connected only to this Laptop, or is it like a password to your Microsoft Account?

Got it. Could you make a photo of the screen while trying to log in and attach it in this chat please?

Yes, it'll help me understand it quite a bit better

That's great! Is everything working fine on your laptop?
It'll now ask for your Microsoft password whenever you turn on your laptop, so if you want to get rid of that, we may do so too

I’m glad I was able to get that sorted out for you. Is there anything else I can assist you with today?