HIS iCooler radeon hd 7770 No signal

It won't send the monitor any signal. I have been able to get it to work for short times, but it usually ends in either windows crashing or the card just stops making a display. I am not sure what is wrong because I just recently received this card from an RMA.
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More about icooler radeon 7770 signal
  1. what is your power supply make and model?
  2. shamsmu said:
    what is your power supply make and model?

    Corsair cx 600W
  3. Presler said:
    The native resolution settings are incorrect. Just make sure you choose the native resolution of your monitor as the default output resolution of your graphics card.

    Not sure how I would do this.
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