There could be a few reasons why the Caps Lock symbol is stuck on screen. One reason could be that the Caps Lock key is stuck in the down position. Another reason could be that the software on the computer is not functioning properly.
If the Caps Lock key is stuck in the down position, the best course of action would be to clean the key. Sometimes dirt and debris can build up under the key and cause it to get stuck. To clean the key, you can use a can of compressed air to blow out any dirt and debris. You can also use a cotton swab dipped in rubbing alcohol to clean the key.
If the software on the computer is not functioning properly, you may need to reinstall the operating system. This is a more drastic measure, but it may be necessary to fix the problem.