hello machai,

follow the step and link resolve your problem easily :

[https://windowsreport.com/keyboard-no.../#:~:text=Solution%201%20%E2%80%93%20Use%20Windows%20Key,Windows%20Key%20%2B%20Left%20Shift%20shortcut.]

Some have reported that pressing F9 and the Windows key simultaneously one or more times has worked to fix issues with the keyboard not working.

I hope resolved your problem then reply back to me.

Thank you!

Hi machai. King,

Did you try to reboot the computer?

Do you have multiple keyboard layouts installed?

It is possible that you have switched the keyboard layout by accident.

http://support.microsoft.com/kb/258824 - How to change your keyboard layout Windows remembers the keyboard layout setting per application and you may have changed the keyboard layout by accident via a keyboard shortcut.

http://windows.microsoft.com/en-US/windows7/The-Language-bar-overview The Language bar (overview).

Did you try to reboot the computer ?