my gpu when connected to vga there is no display

[akarsh dixit]

I have recently bought a gpu gtx 660 dc2ocph 2gbd5 from Snapdeal on 29 may. But when I installed it there was no display then I bought a psu corsair gs600 600w but the problem remains.
Sometime when I open my cpu and close it, start working but afterwards when I shut down and again turn it on it doesn't works
Motherboard: H61mxe-k
Ram: 4gb
Processor: i3 2120
But when I connect my vga to my integrated gpu the display comes.

 

[RastislavB]

What do you mean by "open my cpu"? Do you maybe have another graphics card to put it in that motherboard and try the VGA output on the graphics card? Can you maybe put the GTX 660 in a different motherboard and then test out the VGA output?

 

[Lima Lcr]

Google about the cable compatibility between gpu n monitor based on your products