<a class="break-all" href="http://www.google.com/imgres?um=1&hl=en&biw=1173&bih=471&tbm=isch&tbnid=MOGkEVP7L2vpYM:&imgrefurl=www.pouet.net/topic.php%3Fwhich%3D7816%26page%3D1&imgurl=www.mybestlaptop.org/wp-content/uploads/2008/09/hp-pavilion-dv5t-keyboard-and-touchpad-review-pictures-1.jpg&w=612&h=480&ei=eO44UIuOF-iM0AXeloDQAQ&zoom=1&iact=rc&dur=438&sig=114939469811657169141&page=1&tbnh=129&tbnw=164&start=0&ndsp=12&ved=1t:429,r:1,s:0,i:76&tx=88&ty=57" rel="nofollow" target="_blank">In this picture, it's the vertical line on your right hand side of the mouse touchpad thingy. If relevant, it's a HP Pavillion.
I use it to rotate objects etc in game-playing, and it's stopped working. I suspect the cat, who walks across the keyboard a lot. But I can't google how to fix it, because I don't know what it's called and I need to play CivRome . Thank you!