Mở Activity Monitor (Giám sát Hoạt động). Nhấp chuột vào cột "CPU". Tìm quá trình ngốn nhiều CPU nhất. Ghi lại "Process name" (Tên quá trình) của quá trình không hoạt động bình thường. Chọn chương trình vi phạm và nhấp chuột vào "Quit Process" (Thoát Quá trình). Xác định cách khắc phục chương trình không hoạt động. Gỡ bỏ tập tin trên màn hình nền. Nâng cấp phần cứng nếu gặp vấn đề khi chạy bất cứ chương trình nào.

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You can find this in the Utilities folder in your Applications folder. You can go directly to the folder by clicking the "Go" menu and selecting "Utilities". The Activity Monitor displays all of the processes currently running on your Mac. This will sort the processes based on their current CPU usage. Usually there will be only one that is nearly maxed out at 99-100%, though you may have a couple of different programs taking up 50% each. A lot of media editing programs will take 100% of your CPU while they are running, especially if you are encoding, recording, or rendering. This is normal behavior, as these programs are designed to take full advantage of your processor. This will allow you to look it up later to determine how to keep the high usage from happening. You will be asked to confirm that you want to force the process to quit.  Force-quitting a program will cause any unsaved work in the program to be lost. Force quitting a system process may cause your computer to not work until it is rebooted. If you are having difficulty ending the process, click here for more advanced methods. Perform an internet search on the process name that you force-quit. This will help you figure out what the process is used for, as well as what steps to take to keep it from running at 100%. There are typically a few different ways that you might combat high CPU usage from a certain program:  Uninstall - If the program isn't a necessary one, uninstalling it may be the easiest way to keep it from bogging down your system. Reinstall or update - Sometimes a bug in the program is causing it to take up all of your CPU. Reinstalling the program or applying an update from the developer may fix the problems you are experiencing. Remove the program from your startup sequence - If the program is causing your computer to boot slowly, but you need it installed, you can prevent it from starting when your computer does. Run virus and malware scans - If your research shows that the program is malicious, you may need to remove it using an...