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RE: Just "installed" Radeon R7 250 graphics card on my Dell Optiplex 9020. Black screen when I plug the monitor into the card. Help!

R7 250E is a remarked 7750   R7 250X is a remarked 7770

There were no issues with NON UEFI cards.  There ARE non working issues with UEFI cards.  This is the problem.  A dell precision 690 with 1000W power supply does not work for any of these cards for the same reason.

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