Somebody please help me this didn't work. I have two left side buttons on my mouse and they were randomly changed to tab and c instead of the normal "back" and "forward". Can anybody help me fix this because when I change the mouse 4 and mouse 5 to back and forward it doesn't work and stays as tab and c. Mouse button 4 and 5 also doesn't highlight on the setup when I click the two side buttons so how would I get them to be highlighted? There's clearly something wrong but I don't know how to fix it :/