I wiped the hard drive and reinstalled windows XP home. Everything seems to work fine except the Monitor is jumpy when you have to roll the screen up, down or to the sides. Not to bad until I am working on line then it is really bad. I don't have drivers to install for the monitor could this be the problem? If so where can i find one? I tried the manufactor's website but it is no good. In device manager it has the yellow (?) beside video controller (VGA Compatible). So it is probably a driver issue isn't it? The monitor is 17 inch flat screen from Amptron model number A170E1-T1. It was installed on the computer when I purchased it and this is the first time the hard drive has been cleaned. Computer is about 3 years old.