Macbook's keyboard and trackpad not working


i had big problem partitions on macbook air. still don't understand happened opened mac , had frozen on login screen. tried moving mouse , unresponsive. thought had crashed or held down power button perform force restart. had setup windows partition on mac using bootcamp mac booted windows. shut down , held down option key when powering on selection os x start disk. disk selection screen did not come , booted straight windows. other key combinations such cmd + r or cmd + option + r did not work either. couldn't find information online problem , decide plug windows keyboard in macbook air. miraculously worked , able hold down windows key + r during boot enter recovery mode. when did this, screen came apple mouse, suggesting me power on. of course didn't have mouse connected , didn't think need connect 1 laptop. trackpad wasn't working went , grabbed external mouse plug in , worked.

problem mac function external keyboard , mouse. built in keyboard , trackpad simple don't work anymore. whenever try booting macbook air without external keyboard or mouse plugged in, same window suggesting power on apple mouse , keyboard. seems driver related issue have no idea.

have tried running internet recovery mode , has not fixed problem.

appreciated.
 



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