New Build Won't Start...

Hey guys,

I have a bit of a problem. I have just assembled my new computer, plugged in the final component which is the graphics card (Powercolor HD7950) and when I turn it on the pc doesn't make that usual beep noise that it should.

I have unplugged the fans, ram, ssd, cd rom and and tested each part.
The computer will start without the graphics card perfectly fine but when its in there is just a black screen and no beep noise.

I then plugged in my nvidia geforce gt 240 and the computer boots up just fine.
Please help, I'm not sure what to do, today was the first time my new computer has ever been switched on.

Is the Powercolor HD7950 not getting enough power??
Am I plugging in something wrong?

Here are my specs:

Gigabyte Intel Z77 - D3H Motherboard
Intel i5 3570k Processor
120gb Solidata SSD
2x 4gb Corsair Vengeance RAM
Powercolor AMD Radeon HD 7950 Graphics Card
Raidmax RX-730SS Power Supply
Raidmax Aeolus VL Chassis


Any help would be so awesome :-)
6 answers Last reply
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  1. I'm going to assume that it's a PSU that's not outputting enough considering:
    1. No 80+ certification
    2. Pretty obscure company.
  2. Thanatos Telos said:
    I'm going to assume that it's a PSU that's not outputting enough considering:
    1. No 80+ certification
    2. Pretty obscure company.


    What do you mean by those two points? Would you please clarify? :)
  3. RocketManSR3 said:
    Thanatos Telos said:
    I'm going to assume that it's a PSU that's not outputting enough considering:
    1. No 80+ certification
    2. Pretty obscure company.


    What do you mean by those two points? Would you please clarify? :)


    80+ certification means that it has been officially certified by a voluntary team of experts. If it doesn't have it, like yours, you can run into two scenarios.
    A. PSU doesn't say a thing about its power output.
    B. In your case, the PSU says it, but its not proven at what load it uses that 80%.
    http://en.wikipedia.org/wiki/80_Plus

    Major PSU companies are like XFX, Seasonic, Corsair, and Antec. Most other companies have bad PSU's that mostly fail. When buying a PSU, don't cheap out. A crappy PSU can destroy a VERY expensive rig.(Happened to a friend of mine.)
  4. Never ever buy a PSU from a non quality brand. Some quality brands are Corsair, Sesonic, Antec, Enermax and XFX. I think the best brand is Corsair.
  5. michalodzien said:
    Never ever buy a PSU from a non quality brand. Some quality brands are Corsair, Sesonic, Antec, Enermax and XFX. I think the best brand is Corsair.


    Actually, most of those PSU's are made by Seasonic. So...yeah.
  6. Wow guys, thank you so much for all your input. I had no idea there was such a thing as a bad quality psu.
    Thank you :-)
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