Error with flyoobe : cannot load operating system

[vox2angelica3-star]

Hi everyone,

I used Flyoobe on a few w10 machines to upgrade to win11. No issues.
Today i did the same on a hp z420. Launched, set the isox64 win 11, go... install ok, then restart and boom i get a cannot load os error... aaargh.
Anyone had this issue ?
I ve gone into bios to check etc... cannot go further.
Any help more than welcome. Thxs in advance.

[vox2angelica3-star]

Here are the specs of the z420

[vox2angelica3-star]

No luck on anything had to format the ssd and proceed to a new install. Bummer.