Mouse problem solved

I have been using Endless for past one week on my Laptop Acer Aspire 5. I hated it in the beginning, gradually realized the operating system is quite good if you are learning and educational in outlook. But since yesterday i have ran into problem with the Mouse. Touch pad been out of function since purchase and I am not very keen on using touch pad any way. Now Mouse is gone The Cursor of Mouse looks inverted and moves in opposite direction. When you move the mouse right the cursor moves left, move up it moves down quite annoying left like walking backwards to get to places. I tried many things finally i was able to get tapping on F6 button holding onto Fn button solved the problem Just wanted to share