answer:That’s usually a sign that you spilled some sort of liquid on your keyboard, and now it’s sending mixed up codes to the computer every time you press a key. It could also be a other things, like if this started happening right after you installed new software, then something probably blew away some USB driver or something. Try shutting it down completely and rebooting (always a wise thing to do before spending any money). But if that doesn’t fix the problem, then it’s probably time for a new keyboard.