I just got a new DELL Vostro 1520 the egg which the screen is so dim, especially on 4 corners. Its like my 15 years old laptop. I checked with staples, office max which Acers, HPs, and Sonys arent like it. I even plugged in with the AC power turned the display brightness all the way up and still no bright. Is Dell using cheap displays or just mine is messed up?