After logging in, I opened notepad and exhaustively tested every key on the keyboard. If you don't have a guest account set up, proceed to #3. I logged in as Guest, which doesn't require a password and can be done with a click of a mouse. Is the problem only at the login screen or is it global? I am typing this from that same keyboard so don't give up :)ġ. Below are the steps I took to isolate and eventually resolve the problem. Not sure what your exact problem is because I'm not there to troubleshoot, but I had similar symptoms, namely my keyboard did not work at the login screen.