Norton 360 wiped off

My keyboard  on my laptop has started to play up, keys not working and other printing  3 times, I think it's a bug, not picked up by norton? the the next thing norton disappeared off the task bar it would not start and kept saying it had an error, I would have thought norton would not be so vulnerable, I have ended up downloading it again so now is up and running at the moment, but the keyboard still not working right anyone got any ideas what is going on on what I can do.

Thanks