I started my Toshiba satellite L7750-S7222 laptop running Windows 10 to find that the fn key is acting like it is stuck in the pressed mode. When typing, I must press the fn key to get a space when pressing the space bar, a 1 when pressing that key, and 2, 3, 4, esc, and a few others work the same way. Need to press fn+shift+# to get !,@,#, and $. The number 5-0,-, and = keys all work fine as they have no function attached to them. I have a separate number pad. I still need to press the fn key to get the F1-F12 keys to work. Just pressing the 3 key above the keyboard lowers volume and pressing 4 raises the volume, and so-on. I have not found a way to get it unstuck. Unable to use keyboard properly! Can you help me?