Do you have this problem only in Firefox or is this happening in all programs and in Windows? Do you mean the mouse pointer or the cursor that you see when you type in a text area? I assume that if the cursor doesn't move that text appears backwards?? Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen or hold down the Shift key) to see if that has effect. *http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/ *http://www.7tutorials.com/4-ways-boot-safe-mode-windows-10