[NAME]  You said XPS 8930, but did you really mean an XPS 8940?   XPS 8940 BIOS 2.11.0 you installed won't let the PC boot when an AMD card is installed. That version has been replaced by 2.11.1 to fix this AMD GPU issue.  Install this version using the F12 Flash Update option (Read: Updating the BIOS from BIOS Boot Menu (independent of operating system) at that link.) After 2.11.1 is installed, reinstall your AMD card, and everything should be back to normal
Dell XPS 8940 hangs in Windows, hangs on boot after upgrade. Tried removing AMD software, no change. Works ok without video card. Bios is 2.11.0 Thanks
XPS 8940, after bios update, will not boot with AMD Radeon