I solved by changing hard drive sata port on mother board : windows booted fine without usb key plugged and SSD was redected and reinstalled automatically by SYSTEM at first login.

I solved by changing hard drive sata port on mother board (after testing all bios settings, drivers, boot fix and registry change).
On the new sata port hard drive booted well without usb key...

Hello
I had same issue and try a lot of methods : change bios settings (AHCI, Secure...), change registry keys for AHCI, add bootmgr file in C: drive root, installed sata pilots, use only one hard...