I have recently installed a new hard drive on my HP Pavilion ze5375 notebook. I installed windows XP home edition on the new drive. However I believe there may be a problem with the screen resolution because when I scroll web sites or move explorer windows the movement is jumpy and not smooth as it was with my old hard drive. In the display properties menu I have two screen resolution options: 1024 by 768 pixels or 800 by 600 pixels. I dont remember what my options were when the previous hard drive was installed. Additionally DVDs will not play in the DVD player and the player gives the reason for failure as incorrect screen resolution. Any advice to solve this problem would be very appreciated.