I recently purchased a XFX R9 290 on my prebuilt IBUYPOWER WA563R7, I went to plug it in and I notice I have no power connectors, (my other graphics card didn't have power connectors) so after I plugged my graphics card in I booted up my PC and the graphic card booted up as well, the fans kicked in and the logo also turned on, but unfortunately I have no display. I'm not really much of a computer guy I just switched from consoles but I do have some little computer knowledge. if you guys can find me a solution on why I have no display I would very much appreciate it! thanks.