The scroll lock key on a keyboard affects the way the cursor moves through documents. It is a remnant of DOS-based computers and has no purpose other than to allow you to scroll through spreadsheets in Microsoft Excel without pointing the cursor to the page edge. It's a simple matter to turn scroll lock off on your keyboard.
Look at the top-right portion of your keyboard. Older keyboards will have a separate key for scroll lock. If you find the "Scroll Lock" button, press it. You have removed scroll lock.
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Locate the "Function" or "FN" key on newer keyboards, typically between "Alt" and "Ctrl" on the bottom row of a keyboard. Locate the "Pause/Break" and "Num Lock" buttons on your keyboard, which are usually above the number pad on the top row of a keyboard.
To remove scroll lock, depress both the "FN" and "Pause/Break" keys or the "FN" and "Num Lock" keys simultaneously. You will see a message at the bottom of the screen that says "Scroll Lock Off".
If you have a newer keyboard, the “Scroll Lock Off/On” messages may be displayed in green, red, or black on your screen.
Toggle the “FN” and “Pause/Break” or “FN” and “NumLock” keys on newer keyboards to turn scroll lock back on.