ga z77 da3h mother and a Radeon r9 280x and arter installing the graphic card it is a black screen... Help!

Emit4

Honorable
Dec 31, 2013
6
0
10,510
ga z77 da3h mother and a Radeon r9 280x and arter installing the graphic card it is a black screen... Help!
 

Emit4

Honorable
Dec 31, 2013
6
0
10,510
When I start the computer with radeon r9 280x answer either the graphics card or the mb. when i take out the graphics card, the the graphics card on mb responds ...?