T420 can't use dual DVI connected monitors

I have a T420 connected to The ThinkPad Mini Dock Plus Series 3 - 90W (433810U* - United States), DVI port 1 connected to monitor and VGA connected to second monitor using extended desktop. This configuration works fine but when I hook up both DVI ports to my monitors only one of the screens work and in the Intel Graphics and Media Control Panel only shows one monitor. I have 2 different cables 1 DVI-D dual-link and 1 DVI-D single link, the dual-link works with the VGA setup but with the 2 DVI connections only the monitor with the single link cable works.
Any ideas?
Thanks

Hello @gregw54,
I understand that you are looking to use two monitors on your desktop computer, and I would be happy to assist you in this matter!
To ensure that your display environment is configured correctly, I recommend following the steps in this document on Using Two or More Monitors with One Computer in Windows 7.
Please re-post with the results of your troubleshooting, and I look forward to your reply!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

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T420 can't use dual DVI connected monitors

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