None of the keys on my keyboard work

  1. Unplug all devices from your computer, including your mouse and keyboard as well as printer, scanner, external hard drives, and hubs. (Warning: Some devices may require you to perform steps before it is safe to unplug them, e.g, external storage devices.) Be sure to unplug your hub, if you have one.
  2. Plug your keyboard into the back of your computer firmly and securely. Plug your mouse into the back of your computer firmly and securely. Take special care to make sure the connector is completely in the socket. Go on to step 3.
  3. Does your keyboard work now? Yes: Problem solved.

No: Unplug your keyboard and plug it into another USB slot on the back of your iMac Does it work now?

  • Yes: Replace the logic board.
  • No: Unplug your keyboard and plug your mouse into the port the keyboard just occupied. Go on to step 4.

4. Does your mouse work now?

Yes: Replace the keyboard. No: Replace the logic board.

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