Mac function keys not working

I have actually changed by Macbook Pro"s (Early 2015 running El Capitan) battery, adhering to which the function buttons (brightness regulate, mission manage, skip, next, volume up, volume down...etc) have actually quit functioning.

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I have the right to confirm that the butloads are functioning as if the FN switch is pressed, i.e. F1, F2...etc.

I have the right to additionally confirm that the FN switch functions making use of the Keyboard Viewer (it is not visible but the backroom, rerotate and arrow keys change).

I have the right to confirm setting are correct and that Use F1, F2, and so on keys as traditional feature keys is unchecked.

I have tried:

PRAM resetSMC resetSafe ModeRun Diagnostics (no concerns found)
mac key-board
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edited Aug 7 "17 at 10:30
Kevin Farrugia
asked Aug 7 "17 at 9:51

Kevin FarrugiaKevin Farrugia
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I would start through the following:

Go to > System PreferencesSelect the Keyboard preferences paneEnsure you have actually the Keyboard tab selectedDouble-examine your settings and also adjust if necessary

Let me recognize how you go.

Okay, currently that we know your settings are fine, let"s watch whether booting right into Safe Setting makes a difference, either in the time of or afterwards.

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Boot into Safe Mode

Follow these actions to boot your Mac right into Safe Mode:

Fully shut down your MacRebegin your MacImmediately press the Change key and also store it down Let go of the Change crucial as soon as you see the login home window (NOTE: If you have actually FileVault permitted you might need to log in twice).Take a note of what happens (i.e. what happens as soon as you press the attribute keys, etc)Exit Safe Setting by rebegin your Mac as normalAget, take a note of what happens (i.e. what happens when you press the function keys, etc)

Let me understand exactly how you went and also we"ll go from tright here.

Let"s test your hardware. We can carry out this by running Diagnostics.

Run Diagnostics

Follow the measures below to run Diagnostics:

Fully shut dvery own your MacRestart your MacImmediately push the D vital and save it down till you check out the Diagnostics display screen appearWait for Diagnostics to end up (this typically just takes a couple of minutes)Once finish, among 2 things will certainly show up on the screen:a No worries found messagea brief summary of any type of errors uncovered plus further instructionsIf the diagnostics test does uncover errors, take a note of what they are

Note: If pushing and also holding the D vital at Step 3 doesn"t work, start aget at Step 1 and also, at Step 3 press and hold both the OptionD keys instead. This will certainly try and run diagnostics from the internet rather, so you will certainly should allow more time for it to complete.

Regardless, take a note of what happens and also let me know how you went.

Ok, here are a pair even more tests you can attempt to isolate points further:

Try connecting an external keyboard (any type of cheap USB keyboard will certainly do) and also trial and error the Function vital behaviour on that.Try booting up from one more drive (if you can) and test points.

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Let me recognize the outcomes of either or both tests.