Hello, first off thanks in advance for reading this. I have had my XFX Radeon 6870 for almost a year now. It has two DVI one HDMI and a mini-display port. I am currently running dual monitors, my primary monitor off HDMI and the second off DVI. For some reason I, when I put my resolution to 1920x1080, the screen has black bars all the way around. It fits perfect on the screen with a resolution of 1680x1050. I know both of my monitors are native 1080, I have played my xbox on the same monitors. Just wondering if it is something i'm overlooking or what.
If you have anymore questions about the computer just let me know. I'm running windows 7 ultimate if that changes anything.
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Did you happen to update the drivers when the black bars occurred??
If so, try rolling back the drivers.
Go to CCC, enable GPU scaling, and set it to 0. This will fix this common problem.