After several years of loyal service, my Thinkpad 43p laptop lost some of its keyboard function: many of the keys, including Enter, M, , and others simply stopped working. If I turned it off for a while and reboot, they sometimes come back, but die after a few minutes. Sounds like something is overheating, but what might it be, and how do I fix it? I would hate to lose it if there is a way to revive it.
Thanks for any suggestions.