Monitors not detected

[Travianw135]

I've been running 2 screens (Monitor 1 and Monitor 2 in this post) for about a year, and recently acquired a third (Monitor 3).

When booting, Monitor 1 and 3 display the POST screen. Then those two switch off and Monitor 2 displays the login and OS. Only Monitor 2 is detected in the OS and Catalyst Control Center. I changed the cables around and had the same issue.

I uninstalled all of the drivers, restarted and Monitor 2 never turned on, only 1 and 3 worked, however they displayed the same thing and were detected as one panel in the Windows settings. After reinstalling the drivers I had the original issue.

 

This only occurred once I re-assembled the computer and first tried to run 3 screens.

Monitor 1 and 2 are using DVI cables, Monitor 3 uses a HDMI to DVI adapter, all out of a Sapphire Tri-X 290.

I have been able to use 3 screens out of the same ports before with no issue, however the third screen in that case was only temporary.

 

Any ideas on what may be wrong?

 

 

EDIT: Nevermind, most recently added monitor was causing the issue, replacement works fine with all three.

[Travianw135]

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[William12h]

check your settings in CCC and manualy detect monitors in CCC

[Travianw135]

check your settings in CCC and manualy detect monitors in CCC

Manually detected in CCC and Windows settings, still only one shows up.

[yudothat2me]

Doesn't Eyefinity require one of the monitors to be connected with Displayport?

[Travianw135]

Doesn't Eyefinity require one of the monitors to be connected with Displayport?

Not with all of the recent AMD cards, and it isn't necessary for the 290. I'd used 3 monitors without Displayport before with no issue, but now they just aren't being detected.