Chosen Solution
Hoping someone can solve this mystery for me: I just replaced the top case on my son’s MacBook Air. After reassembly, internal keyboard and power button have zero response, but trackpad works fine. Checked the keyboard cable - it’s seated properly. I have tried two different top cases, one A stock, one B. Same result with both. Trackpad flex cable looked fine, but changed it just to be sure. Again, no keyboard response, trackpad is fine. Boots when power cord plugged in, but I can’t reset SMC since the keys are not communicating. Keyboard shows up in System Profiler, so I’m thinking I can rule out a logic board issue…?? Deleted .plist files as instructed in another forum. Pref Pane in system info: Version 14.0, visible, 64-bit It’s an old machine, but it’s in good shape and perfect for a teen, so I’d like to keep it working. but I’m at a loss for what to do next. Any insights or ideas would be tremendously appreciated. Thx. MacBook Air 13” Mid 2011 High Sierra 10.13.6.
What happens when you open up the Keyboard viewer and hit the keys does the viewer key change in turn? Open Preferences under the Keyboard section check - Show keyboard and emoji viewers in menu bar Also within the Keyboard control panel what do you have selected in the Input Sources? You should have U.S. selected. Update (11/15/2021) @kingofmac - Hoping it was a simple issue. Lets inspect the keyboard connection on the trackpad. Can you take a nice clear & sharp picture of the connector so we can see it at it is now as well as after disconnecting the cables I’m thinking the trackpad keyboard input has failed Adding images to an existing question
If it has you’ll need a new trackpad
