OK thank you, Im sorry. I looked at this one and others drives some days ago, and I mingled.
I finally tried last night with clover or duet, might seem to install windows on the drive but I finally can't boot on it, I describe so my experience could maybe help someone with this SAMSUNG 950 PRO and HPZ800 :
First step, to install windows seems that the problem I had was that i was using an MBR bootable usb stick for windows setup. When I changed it to a GPT bootable usb stick with the ISO of windows, install works.
Then, I hoped the drive could boot directly from bios, as the SAMSUNG 950 PRO as oprom built in. But it doesn't.
After that, can't booting via clover, the problem I had was that the startup.nsh commmande doesn't make anything. After few hours looking for changes, I quit.
Moreover, when I went to my old system in WIN10, I could,'t see any partition on the SAMSUNG 950, seems to be clear. That's strange caus the windows setup via clover seems to be done.
Maybe I could make it with a lot of work, but like I said all this work is very difficult for me, I'm not capable and I'm tired.
Anyway, I return the drive to the seller today.
A last thing : on your HPZ800, you are/were using the sm951 directly booting from you bios or via the clover/duet method ?