graphic cannot display

JohnHun

Honorable
Aug 3, 2013
26
0
10,530
I had a problem with my graphic card.
My pc specs
I7 4770
1 stick ddr3 8gb
Psu 500watt true power
1tb hdd
2led 2000rpm fans.
I try use my radeon graphic card hd6790 on my pc, I plug in all nicely but no display on my monitor. And then I try my radeon graphic on my friend pc it works perfectly fine. And then I try with my old graphic card gtx 650 is works fine.
All cables are plugged in.