If your keyboard keys stop working, it doesn't necessarily mean they're broken or need replacement. From checking keyboard ...

Follow the steps if you have TeamViewer installed on your PC: Computer keyboard keys can fail to work if there is debris between them. Other reasons for some buttons not working on your keyboard ...

On-Screen Keyboard is a built-in feature that allows a user to use their computer even if their Keyboard is not working, it also is a bit more secure than an actual Keyboard as you are protected ...