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Graphics Cards

Journeyman III

Graphic shows no signal after windows loading screen

hi , i bought a graphic card that was used for mining , when i first attached it to my pc and loaded the OS , it said this device is not working properly , i understood that its for modded bios it had on it , i downloaded the new bios from here :

VGA Bios Collection: XFX RX 470 4 GB | TechPowerUp 

and flashed my graphic bios , after i flashed it , i installed latest driver for my card , after i restart the pc , when its coming to windows , after the windows loading screen , screen goes black and monitor shows no signal , but windows is loaded , i hear windows loading sound , graphic fans are spinning , but i dont get anything on the monitor !!  can anyone help me ?   cpu :  i5 2400

Main :  Asrock h61mvs

Ram: 8 Gig

PSU :   530 Watt

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