gpu wont display

[Gavin Mathis]

I just installed a radeon 7750 in my new pc. The pc came with intergrated Intel Graphics. When I plug in the hdmi cable into the gpu, nothing displays but when I plug it into the intergrated graphics it works fine. Is there a way to fix this so i can use my graphics card?

 

[alexoiu]

Is the graphics card powered (do the GPU fans spin)?