How do I get my XFX Radeon HD 7870 to work with 3 monitors using HDMI, DVI, and Mini DisplayPort?

Posted by user88792 on Super User See other posts from Super User or by user88792
Published on 2013-04-05T20:03:01Z Indexed on 2013/10/25 21:59 UTC
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windows-7

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Windows

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drivers

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amd-radeon

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mini-displayport

I bought a XFX Double D FX-787A-CDFC Radeon HD 7870 and set it up using the HDMI, DVI and Mini DisplayPort (using an Apple mDP-to-VGA adapter). I hooked it up, installed the drivers and rebooted. The image came up on the third monitor in a weird resolution. Why did this happen and how can I fix it? I am using Windows 7 Ultimate and the system is completely updated.

Side note: When I disconnect the Mini DisplayPort adapter it works fine, however for my work I need 3-4 monitors.

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