You may press it incidentally, or the numeric keypad can also be forcedly disabled by Windows. Method 1: Make Sure You’ve Enabled the Numeric Keypadīefore taking any other action, the first thing you should do is checking the key on numeric keypad. To fix it, there’re 3 tips you can give a try. But this kind of situation do happen in Windows 10 occasionally. When you are using your computer and want to enter some numbers, it can be very frustrating if the numeric keypad doesn’t work normally.