I have a dell G5 laptop and have just install Windows 11. The laptop boots into Windows 11 perfectly fine.
To try regain my Linux boot loader I have followed the post to try get it to work: Cannot Boot To Ubuntu After Installing Windows
However for me when I select ubuntu boot loader, the laptop loads into "Dell - Pre-Boot System Performance Check" as shown in the attached images.
I am not sure where to go from here. I am wondering if anyone can help solve this.
Note: My laptop has 2 hard drives, 1 for Linux and 1 for windows (I am not sure if that makes a difference)
Thanks for any help
UEFI Settings:

