Can't Get My Graphics Card to Work. Black Screen No Display Output (AMD R9 380 4gb)

matthieu2020

Commendable
Jun 19, 2016
5
0
1,510
Hello i recently baught a saffire r9 380 to boost my pc. I had a gtx 460 and i had it plugged to a eizo screen and a apple cinema one. First with the gtx 460 in the second pci 16x slot and the r9 380 in the first with the eizo monitor plugged to the r9 380 and the gtx 460 to the apple one everything went well until i wanted the apple screen (bigger) to be my gaming screen so i plugged it to the r9 380 and the eizo to the gtx 460 and on the apple screen i got a sort of rainbow pixelized flikering screen.

I am really confused and don't know what to do please help:(

here is my config : p5q pro motherboard
q8800 quad core cpu
700w psu
6gb ram

i tried:

-) updating drivers
-) reseting windows
-)changing resolution
-)praying to god to help

Pls someone help :(