weird transparent black lines on screen.

Specs: Cpu: intel i3 3240 3.4 ghz Gpu: galax gt 730 gddr5 monitor:dell E1920h Ram: 4gb ddr3 Hdd: toshiba 500gb Psu: dell 275w VGA PORT PC TO MONITOR Before i was using inno3d gt 220, there's no lines on the screen. I bought an galax gt 730 ddr5 and install it correctly, the lines appears on...