Apple Computer All-in-One Input method cannot be changed?

This problem may be caused by the input method settings or keyboard layout. Please follow the steps below to try to solve the problem:

1. First, check the input method settings. Click on the Apple menu in the upper left corner of the screen, select "System Preferences", and then click "Language & Region". Under the "Region" tab, make sure the "Input Sources" section only contains the input methods you need. If there are input methods you don't need, click the minus button to remove them.

2. If the problem persists, there may be an issue with the keyboard layout settings. In System Preferences, click Keyboard, and then under the Input Sources tab, make sure your keyboard layout is set correctly. If you're not sure of the correct settings, try selecting "US" or another keyboard layout that matches your device.

3. If none of the above steps solve the problem, you can try resetting your keyboard settings. Turn off your computer, then press and hold the Option and Command keys at the same time until you see the Apple logo or a spinning globe. Release both keys, and then let the computer restart.

4. If the problem persists, it may be a hardware issue. You can contact Apple Support or visit an Apple Genius Bar near you to schedule an appointment for inspection and repair.