I have a HP Elitebook, had it for a few months. Have enabled 'backwards' scrolling so scrolling down moves the page down (as opposed to scrolling down moves the page up). However, over the past few days days I've noticed ever 7-12 scrolls on a webpage it reverses and scrolls up for 1/2 scrolls and sometimes doesn't scroll. I tried changing it back to the default and while it doesn't scroll in the wrong direction, it does just not scroll a lot more. Has anyone got any idea why it is doing this and if so how to fix? Driving me barmy!