A few days ago my HD crashed & I had to replace it. When I reinstalled windows there are somethings that don't seem to be the same. The one that bothers me the most is that when i'm scrolling down a page or web site it's not a smooth scrool. It's choppy. Iv'e gone into the control panel tried a few things & nothing changes. When I scroll I use the up, down botton or the curser. Any help on this would be greatly appreicated.......O buy the way I have a lap top if that makes a difference.