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Hi, my MacBook does work absolutly fine when it’s turned on, execpt the power button. The button don’t react on any action. I can’t do an SMC reset or anything else. To start the MacBook I have to open the buttom side an disconnect the battery. After reconnect the battery I plug in the magsafe adapter and the MacBook boots automaticly. Is there another way or workaround. My daughter uses the MacBook sometimes for school and I don’t want her to open the MacBook. Please excuse my bad english.

To fix this problem, the MacBook must be opened. You can either take it to a repair shop, or A} Replace the top case($200), guide here or B) Replace the keyboard ($19.99), guide for a 2013 MacBook keyboard replacement is available here