Q: the "z" key won't respond and something continually types as I try to log into my computer.

One day my "z" key worked fine and the next it didn't respond. I use shortcuts in my adobe products a lot and "command + z" is one of the most helpful with what I do. This key not working is extremely inconvenient. Along with this key not responding is a phantom typing as I log into my computer. I am assuming it is the "z" key, but it is only when I log in that I have the problem. It just keeps up the stream of " ***** " so I am not sure what it is exactly. It takes several tries to get it to stop typing so that I can actually log in. As soon as I log in, I have no problems with sticky keys.