Hey guys first post on here! I have a HP Z400 with a x5690, 24GB ram, win 10, upgraded psu (600w) with the proper adapter. I tried installing my RX 580 and it will not post, no video output. There is no lights flashing or beeps from the system. When I turn the system on all the fans operate at normal speed. My monitor detects something when the system initially boots but goes into sleep mode right after. I have a old gtx 280 I installed that with no issues. My bios version is 3.57. I'm thinking a possible bios update or some setting I have to switch. Any help would be awesome!