keyboard no longer works after starting internet security trial

using on screen keyboard to type this. i installed avast a while ago and today upgraded to the internet security trial. after restarting my computer i found that my keyboard would not respond. i restarted again and noticed that the keyboard worked in the BIOS until i hit the loading screen at which point the keyboard stops responding. checking the device shows “Windows cannot start this hardware device - code 19”

tried safe mode, keybored still stops working . deleted filter uppers like the guy did in https://forum.avast.com/index.php?topic=157941.0 and got the same result he did. error went away but keyboard still dose not function.

ive never had any issues with avast before but this is a huuuuuge issue and i need to know how to fix it.

relevant avast version info: http://prnt.sc/a98ev3

See: https://www.avast.com/faq.php?article=AVKB37#artTitle

tried safe mode, keybored still stops working
avast doesn't run/work/load in safe mode. It seems there is a problem with the keyboard itself.

Does the keyboard work on another system ?
Does another keyboard work on your system ?