guys! i just found out how! Im running on a Ati Mobility radeon 3450 graphic card. So here,
1. Try to go to your Catalyst control Centre.
2. Look for Notebook panel properties on the left panel menu (I don't know about desktops or just look for something that shows the same)
3. Click Attribute...
Wow, I also have the same problem. when playing games, the screen seems to have black borders like in a movie. Hmmm. anyone know how to make it regular fullscreen?