Grimefighter and the keyboard

I’m taking the freedom to translate and ask for help in the behalf of another user:
https://forum.avast.com/index.php?topic=159311.msg1152373#msg1152373

Looks to me that person is using a old(er) avast version since the problem has been solved already.
There was a bug in the keyboard drivers.

Hookup a external keyboard, install the latest avast version (clean installation is best), reboot.
That should solve the problem.