1.7 GHz dual-core Intel Processor (Turbo Boost up to 2.6 GHz) with 3 MB shared L3 cache

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CapsLock stays on and boots in safe mode EVEN after keyboard replaced

I have a water damaged Mac Air 11" A1465 (mid 2012). It will only boot to safe mode due to caps lock key stays on. After I replaced the keyboard, it booted normal once. Then it went to safe mode on next reboot. So the replaced keyboard seems functioning normally.

I took the battery out and re-seat the keyboard cable that connects to the touch pad and it was okay one more time. Reboot, it went to safe mode again.

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Should I also replace the Touch Pad?

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Chosen Solution

Most likely the signals are not passing through the trackpad connection correctly (short).

So yes, I would replace the trackpad & its cable back to the main logic board.

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thanks, I will order the track pad and get back to you. Hopefully, that can fix the problem.

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I replaced the cable connected to the MB and it behaves the same. Then I replaced the trackpad and it is working fine for 3 days now. Thanks for your suggestion!

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Joe Yang will be eternally grateful.
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