Can't start Mac Os from NVME drive but Mac Os starts perfectly from my USB installer HDD.

Maybe someone who can help me ? I installed Sonoma on my mac pro 5.1 on an nvme SSD. The installation worked and now i booted on the homescreen. When i try to install the EFI oclp boot on my nvme drive to statup my mac from the nvme drive and not the installer USB plugged in I get no more screen with startup. I stays dark and doesn't seem to boot. Any ideas ? Thanks