Chapter in this post:
If certain keys on the Mac or on the MacBook keyboard no longer work and texts can no longer be written, then this can be a real problem. I recently received a question from a reader about this problem on an Apple computer: What can you do or what error is present when Mac keys no longer work, i.e. no longer write? How can the text input / the use of control buttons be implemented again? When researching the topic, I saw that these questions are not asked that seldom - so here is a help post with the answer (s).
If you find defective keys on the Apple Mac, iMac or most likely on the MacBook Pro / Air and therefore cannot write anything or use the macOS functions on the F-keys, then a defect is rather unlikely. If the laptop or keyboard has not been dropped and there has been no water, heat or cold damage, then it is likely that something has been set incorrectly in the system settings. This can have different causes - the cat ran over the keyboard, the system update made unnecessary settings on its own or the children overzealously ticked a few additional ticks here and there.
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The first error or problem could be that the fn key ("fn" for function), which you can find on the bottom left of the keyboard, is permanently activated. This means that the keys for screen brightness, key lighting, multimedia control, etc. no longer work, but instead perform tasks for F1, F2 and so on.
To bring the buttons back into harmony with the symbols shown on them (brightness, volume, play, pause, etc.), proceed as follows:
If there is a very special case with your Mac keyboard or MacBook that the keys 7, 8, 9, u, i, o, j, k, l, m and dot no longer work, then there are two possible explanations. Rarely will the cause be that these keys, but none of the others, have been damaged by moisture, impact or crumbs. The “keyboard mouse” is more likely to be activated. This is because this is placed on the named keys if no number pad is available, which is otherwise intended as an alternative for mouse and trackpad.
So if the shown keys on your Apple keyboard no longer work, then the solution - of course - can also be done via the system settings of macOS or Mac OS X. And these are the steps to process:
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After graduating from high school, Johannes completed an apprenticeship as a business assistant specializing in foreign languages. But then he decided to research and write, which resulted in his independence. For several years he has been working for Sir Apfelot, among others. His articles include product introductions, news, manuals, video games, consoles, and more. He follows Apple keynotes live via stream.