R9270X-DC2T-2GD5 not working

Jan 22, 2019
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I bought A used graphic card. After i am conected The cables and everything i power it on and it says no sygnal Both leds are Light green and Both wentylators are spinning.
Motherboard:GA-H61M-52PV
Power:Cooler Master G550M
CPU:Intel Core i5
4gb ram