I hope you can help me. Several keys on my HP Spectre 13-3000ea ultrabook occassionally don't work. More specifically, the n,m,h,j,y,u,6,7 keys (if you check your keyboard you see they constitute a vertical area of keys) do not work, most often when the laptop boots from cold or resumes from sleep. I can get them to work by rapidly hitting other keys in the neighbourhood and swiping my finger across these keys. All of the sudden they 'wake up' again and they will work. Sometimes, randomly, they will stop functioning again and the problem appears to become worse.
It is not a software related problem which support seems keen on, since I experience exactly the same problem in Ubuntu Linux and also in the BIOS. I have the feeling it is related to the connector ribbon but I'm having a bit of a difficult time convincing HP Support of this, especially because the occurrences seem random. If you have any ideas on how to solve this problem, please let me know.
Edit: I forgot to mention I never spilled anything over my keyboard and I used a keyboard brush to clean under the keys as well as I could, since the keys are not removable.