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MacBook Pro keyboard not working
Different issues can prevent a MacBook Pro keyboard from working. Typically, the “Mouse Keys” function is turned on. “Mouse Keys” features can be turned on simply by logging into a different Mac account where “Mouse Keys” are already turned on in that account. This could have been activated when syncing “MobileMe,” by using “Migration Assistant,” and transferring another user's settings where “Mouse Keys” were enabled. Another reason this issue could occur is when clicking the “Option” button five times (if the setting is turned on in the “System Preferences.”)
To check the “System Preference” settings or to activate/deactivate “Mouse Keys” follow these steps
If the MacBook Pro keyboard is still not working or this does not fix the issue, checking and unchecking the option for “Press Option Key five times to turn Mouse Keys on or off” could help. If a different user is logged in where “Mouse Keys” are not activated, but the keyboard is still not working, move the button for “Mouse Keys” “ON” then “OFF” again. This could help restore the issue.
When “Mouse Keys” are activated on a MacBook Pro keyboard, the keys 7, 8, 9, U, I, O, J, K, L, M and the period (.) control the mouse movement and clicking. However, the remaining numbers, letters, and keys typically cannot be used. MacBook keyboards without a number pad or “Num Lock” include Apple Wireless (2007), MacBook Air, MacBook Pro (Early 2008 or newer), and built-in MacBook keyboard (late 2007). On these keyboards, the following keys should still work properly when “Mouse Keys” are activated: Esc, Eject, Delete, Tab, Fn, Control, Option, Command, Function keys, the arrow keys and Shift.
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