Monitor says no signal when i connect it to my Graphics card

[Crider6]

i bought a gigabyte radeon 7950 for my z77 extreme 3 and everytime i connect it to the gpu the monitor just says no signal, but if i take the gpu out and plug it in to the mobo it works, so what do i do?

 

[ThatVietGuy]

PSU wattage along with make and model? You make sure to connect the two 6-pin connectors?

Does it still output from the mobo if the GPU is installed?