Radeon HD 6850

I installed today a new Radeon hd 6850 in my computer. With the 12V power connected from the main power switch (6pin 3 yellow/3 black), the computer does not start up - with the connector disconnected, the computer starts normaly, but the card is not found in the hardware. The mainboard is a Z68X-UD3H-B3 from Gigabyte with i5 2500K processor and 8Gb Mem.
No signal from the card when connected to the monitor. The graphics cooler on the Radeon card works normal.
What can I do?
3 answers Last reply
More about radeon 6850
  1. Can you try the card in another PCI-E slot?

    Also, make sure no connection is loose and the card is properly in the PCI-E slot.
  2. What power supply do you have? You sure there's enuff power for everything when you plug it in?
  3. Hi,
    Yes I tried the other PCI slot and the power supply is a rasurbo 650W!
    I think this card is DOA and I send it back.
    Yhanks anyway
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