Keyboard not typing letters on Lock Screen windows 10

[Windows 10]

I power on my pc it goes to the normal windows Lock Screen and it tells me to type in my password and the keyboard wasn’t working but I could type numbers for some reason so I did until it said I tried to many times and I had to type in the charecters to be able to try again and on this screen I could type just fine I could type letters but on the actual password I can’t type letters I’ve tried to follow some stuff online what people are saying but I’m on the Lock Screen I don’t know how to access the command prompt or anything I don’t know what to do please help me step through step thank you

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