I am not able to get a dual screen display on XFX HD 7970. It is a Radeon HD 7970 based card. It is a quiet high end one. I am having two monitors. One is Samsung which is 18inch monitor and another one is BenQ which is 27inch card. I want to use both the screen as one to play games.But when I connect the big one is having no display. It is saying not signal detected. What should I do.
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