New graphics card - no display

[Obliteration]

Ok, so I recently upgraded. Bought a new CPU, MOBO, GPU, RAM, PSU and Case. Kept my old HDD. So only way I can use my pc atm is without the graphics card. My old GPU was a 9500GT, and I uninstalled the nVidia drivers, installed the AMD Catalyst and the drivers, and my pc turns on but no display and no beep. I only hear the beep when I don't have the graphics card plugged.

Here are my specs:
CPU: AMD Phenom II X4 965
MOBO: BIOSTAR A880GZ
GPU: HIS IceQ HD 7870
RAM: Corsair Vengeance 8GB
PSU: Corsair CX600

What could the problem be?

 

[clarkjd]

Did you connect BOTH 6-pin PCI/E power connectors to the graphics card?

 

[Obliteration]

Yep.

 

[Obliteration]

Anything else I can try to get this issue resolved?

 

[ARICH5]

can you go to integrated graphics ok with no beeps?

 

[Obliteration]

With integrated graphics, I can hear the beep and I can use my pc. But whenever I use my new graphics card(the 7870). No display and no beep at all.

 

[ARICH5]

hmm...i would say psu or motherboard issue

 

[Obliteration]

Damn it. Just bought them and already getting issues. Anyways, I guess I'll use my old 9500 GT till I figure out what's causing the problem with the 7870. Will the 9500 GT bottleneck the x4 965 BE?

 

[Obliteration]

Also, is there a possibility that I might have to disable my onboard graphics in the BIOS so it can display anything? The fan works when I plug in both 6 pin connectors, but I get no display, and the pc works perfectly when I don't have them plugged in. So I'm guessing it's either the GPU or the MOBO? Cause it is kind of a cheap mobo.

 

[Andrew Abballo]

This mobo has compatibility issues with some new cards. That's all I know. It's confusing trying to find out what cards to use.