Just bought a Radeon RX 550 for my Dell XPS 8500. "Secure Boot" is disabled in the bios. Fan is spinning, but it's just a black screen. Any suggestions???
I figured it out. You have to enable the onboard video in the bios, and connect a monitor to it. Install the Radeon card and boot up. Windows 10 recognizes that there is another video card. Then you can install Radeon drivers/software. Once complete, shutdown and remove connected monitor from on board video and plug into Radeon card and turn the PC on. That's it. If you wish, you can disable the on board video in the bios.
INFORMATION REQUIRED WHEN POSTING A QUESTION
Dell stock 460W PSU.
Windows 10 pro
Retrieving data ...