Sometimes you need to install your display driver
. If it is listed in device mngr as pnp then 7 installes a generic driver (If) and I say if because I think someone else told me samsung LCD displays don't have drivers
. If it does then once installed 7 will set your dispay properties to native reolution. Go to samsun.com us check support> download then type in your model # and you can click on the driver. Save to your desktop then go to device mngr ( computer right click then manage then device mngr dispaly, update driver then find it myself point it to where you put it on your destop and install. restart your system and see if you have your native resolution in full screen.