Alternatively, consider this: how do you scroll in a laptop? Using the touchpad. Do the same thing you used to scroll this page down or up. That answer is based in the old thread, when you said you didn't have a mouse wheel because you were in a laptop. For me, sliding two fingers up decreases size, and vice versa. It varies, depending on your PC. TPT works perfectly with laptops. If it is truly broken, and you used the arrow keys to scroll, disregard this.