My mouse and the direction keys on my keyboard started acting up when scrolling down, then it would go back up to the top of the page automatically. I wasn't sure why, I checked all of the connections and did a system restore going back a week. Now when I boot it up, it will show the Windows XP logo at the start and the screen goes blank. The cursor is on the screen and you can move it around the screen. I even tried to start up in safe mode and get the same results. You can see the "safe mode" in each of the 4 corners. It seems like it stops booting up. I'm running XP Pro with Norton AV. Any ideas from anyone of what is going on? All help and suggestions would be appreciated.