Chosen Solution

I made some change to some of my settings and the keyboard stopped working. Any help in telling me what I screwed up will be appreciated.

Is there a key with function abbreviated in blue, and blue little symbols where the Fkeys are at the top of the key board. One of the symbols is for the keyboard to shut it on or off..there’s also ones for your screen and mouse. Hold down function the press the keyboard symbol, see if that helps. If not, then you can try the backup and restore to an earlier date option to when the keyboard worked