i take a new monitor and this card.i disable my cpu graphics and i installed the card.i download the drivers from the site but the monitor in the corners is black
resolution is at 1920 1080 and i have istalled the monitors drivers
It is possible that your monitor is bad and has dead pixels. Dead pixels are random blacks anywhere on the screen. Check with your old monitor or any other monitor if there is any black spot. Most probably there wont be. This means your monitor has dead pixels, since it is a new one, you can get it replaced.