Question R9 390x won't let me turn on my pc!

[Talpa710]

So I've bought an r9 390x gpu to upgrade my rig to game on (currently using a 1gb rapid-fire pro) and it seems I can't get the pc to boot when I physically install the gpu it just makes a noise and does nothing but if I put my old card in it works perfectly fine. Do I need to tweak something or Uninstall or install something? Or is it the bios? Please help!!!!! My specs are:
I7
16gb ram
DP67BG mobo
Currently using rapid fire 1gb gpu
Ax750 corsair gold
(gpu I'm trying to use xfx radeon r9 390x)

 

[Metal Messiah.]

What's the make and Model number of your PSU ? Did you plug the PCI-E/PEG connectors to the GPU from your power supply unit ?

What kind of noise it makes ? Do the fans spin on boot ? Do you have the latest BIOS installed on your current system/PC ?

 

[Talpa710]

What's the make and Model number of your PSU ? Did you plug the PCI-E/PEG connectors to the GPU from your power supply unit ?

What kind of noise it makes ? Do the fans spin on boot ?

Hello thanks for the reply! I'm using a corsair ax750 gold psu and I'm using 2 separate 6pin to 6+2 pin cables as the gpu requires a 6 and an 8pin I was going to use a single dual ended cable but read you needed 2 separate cables so I bought them.