I am using Windows Vista on my computer. My default resolution is 1280 x 1024. The lowest resolution available is 800 x 600. Whenever I set the resolution on 1280 x 1024 it remains when the computer is on. But if I reboot my computer or start it after a long time then the resolution is changed to 800 x 600. The resolution is not being preserved by my computer; does anybody know what the problem can be?