Why key 1-9 on my key is not working?
after upgrade to sierra, key 1-9 isn't working. but when i use external keyboard, its working fine. please help me
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Could be a couple of things. Did you spill anything on it?
Boot into Safe Mode by holding down the shift key on boot up. If it now works, get a Paid anti-virus such as WebRoot or Symantec Endpoint Protection and get rid of your virus.
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