New graphics card giving black screen. I get sound and it boots. Gives 1 long, 3 short beeps. Asus motherboard, adequate psu. Both the card and the port are functional on their own. Paging doctor House.
try and make sure everything is seated properly and pcie power if plugged in if needed
If I am reading properly, the card and monitor and cable all work fine, just not together
Sometimes, a bios update for the motherboard can ensure compatibility witht he new graphics card
Had to do it once with a MSI Z77 GD65 and a Powercolor 7950 Boost