today i bought new sapphire rx 580 pulse 8gb. after plugging it in with 6+2 pin PCIE connector. i get no signal from monitor. gpu fans are spinning.single power beep from speaker. its connected via dvi cable. cable is not faulty i tried different ones. other gpus work flawlessly. cpu is ryzen 5 2600 with no onboard graphics. psu is 620w 80+ certified. motherboard is asus prime b450m-k. tried updating bios with no luck. cables are properly seated. i also tried uninstalling existing drivers. i previously used rx 560 with no problems whatsoever. any help is appreciated.