Toggle the switch under Mouse Keys to On.Arrow down to Ease of Access mouse settings and press Enter.With nothing selected, type the word ' Mouse' anywhere on the Start Screen.If your mouse isn't working, use the Tab key and spacebar to navigate through menus. If the keyboard shortcut key combination listed above did not work, you may enable or disable Mouse Keys, using the following steps. To permanently disable Mouse Keys, repeat steps 1–4, and toggle the Mouse Keys button to Off. To stop using Mouse Keys, press Num Lock to disable your numeric keypad. See your laptop's manual for information specific to your laptop. When the Num Lock is on, these keys produce a number when pressed. Some laptop numeric keypad's share keys with other numbers and keyboard letters (e.g., 7, 8, 9, U, I, O, J, K, L). If you are using a laptop, Num Lock is usually toggled by pressing Fn+ Num Lock. Press 8, 6, 4, and 2 (up, left, right, down) on your numeric keypad, and the mouse pointer moves one pixel in that direction. This sound lets you know your numeric keyboard is controlling your mouse pointer. You'll hear a high pitched beep when you turn on Num Lock.

Press Num Lock on your keyboard to toggle Num Lock on and off. Mouse Keys are now enabled, but by default, they only work if Num Lock is turned on.Press Space to toggle the button to the On position. The black box indicates your keyboard controls the on/off button labeled Turn on Mouse Keys to use the numeric keypad to move the mouse pointer.The Ease of Use settings for your mouse is opened. Press the down arrow on your keyboard to select the first suggestion, Control the mouse pointer with the keyboard. In your Settings window, the text cursor is already in the search box.(Don't forget the colon : after ms-settings).

Press Windows key+ R to open the Run box.

In the Mouse Keys section, toggle the switch under Use numeric pad to move mouse around the screen to On.

In the box that appears, type Ease of Access mouse settings and press Enter.

Press the Windows key on your keyboard.

If your mouse isn't working, use the Tab key and Spacebar to navigate through menus. In Windows 10, you can toggle Mouse Keys in your Ease of Access settings.

Repeat this process to turn Mouse Keys off.

When the window appears, press spacebar or Enter to choose Yes.

Press Left Alt + Left Shift + Num Lock on your keyboard at the same time to get a dialog box similar to the example shown below.

In all versions of Windows, you can toggle Mouse Keys on and off with a keyboard shortcut. How to enable/disable Mouse Keys Keyboard shortcut

Turn of the key