Qubes Can't dual boot on Dell xps 8950

When I try dual booting on Dell XPS 8950 it won’t work and a blank screen appears.
Thank you.

Mosly the problem because incompatible hardware, you could find a workround like applying kernel parameters on grub, as example.

Hello. Does the blank screen appears when trying to boot the installer? Or did you already installed Qubes and cannot boot anything on the disk?