Windows 10 Keyboard Bugs

When I join a world, multiplayer world, or server, I have problems with my keyboard which are the following:

1. I can't press some buttons for the first few minutes (specifically: A, S, Q, E, Esc, F5, and a couple others).

2. When I go to chat, the chat box fills up with EVERY SINGLE LETTER I typed since either the join of the game or the last chat.

Please someone tell me that I have hope soon!