3 Replies Latest reply: Feb 4, 2013 4:24 PM by Grant Bennet-Alder
ilfungo Level 1 (0 points)

I upgraded my mac pro 8 core early 2009 with ATI HD 5870. After a week, everything worked perfectly, the second monitor on MiniDisplayPort stays black and says no signal input ... What could it be?

I also changed cables and monitor but nothing changes ...


Mac OS X (10.7.5), Mac Pro 8 core early 2009