On my dell Inspiron 1505 laptop I'm running windows XP sp3. every time I try to shutdown or log off everything but the wallpaper disappears and it freezes up. I've given it as much as an hour so it isn't just going slow. This laptop was working fine until a few days ago immediately after I removed a bunch of software. Earlier today I had to delete upper and lower filters in the registry to get my dvd drive working, However this problem has been occurring since before the registry change i made.