The resolution is not set for your screen size. If the logon does not have a splash screen you can edit it in skinstudio. Select the screen and click the edit button. A screen will apear with a colum of selections at the side called elements. Expand panels select top panel and in the properties box below select style and chose stretched (6).Do the same thing for center panel and bottom panel and select the save button at the top of the screen and it should look fine.