@Fernando Maybe that is what i am doing wrong. I always prepare an mbr legacy bios usb flash drive. Maybe the uefi mode is the key.

I finally found a way to make a working windows 7 iso. A tool named Windows 7 Image Updater did the trick

@Fernando re latest OFA NVMe drivers for Win7-10 (32/64bit): post no2, according to OFA the drivers work on Windows 8.1 >link<. Windows 8.1(64bit) installs onto a B365(and B360) chipset board/s without problem, is it worth adding the 8.1 info to the OFA driver entry? 8.1 is proving to be a popular alternative for people who dont want to go Win 10.

Hi, Fernando!
thanks that verify my job!
before than to flashing, i want to ask one question - if i will want to use nvme ssd in pci-e, as just storage for files and i dont need to use it as bootable, in windows 7 os, that i must modding bios too or not?
ps all ms kb installed, may be will mx500 or samsung.
I in advance to want to be ready.

You only need to modify your BIOS to allow it as a bootable drive. If you're just using it for storage then Windows will just see it when you plug it in.

really? just my friend plug nvme ssd and his win7 didnt can to allocate disk in disk managment, but it was clean win 7, without updates, may be so?

driver released by ssd vendor?
i know that sams/intel ssd give for download driver for their nvme ssd, but about crucial it none.
also what about Deallocate and s.m.a.r.t read?
ps sorry for offtop.

Excuse me, have you already installed these patches?

Windows6.1-KB2908783-x64
Windows6.1-KB2990941-x64
Windows6.1-KB3087873-v2-x64

I downloaded the Samsung nvme driver for windows 10 x64 to change driver for my 970 pro 1tb but when I choose the "have disk" option in device manager to change the driver from microsoft's default driver to the one downloaded I receive an error message saying "the folder you specified doesn't contain a compatible software driver for your deice. if the folder contains a driver, make sure it is designed to work with windows for x64-based systems.
I'm confused, because I downloaded the driver "64bit Samsung NVMe driver v3.3.0.2003 WHQL for Win10 x64" and I just installed windows 10 pro x64. any way around this error message?

hoping this driver may help, because i'm getting painfully bad 4k read/write times on my 970 pro in windows 10 for some reason: 27.24mb/s read, 40.64mb/s write, and acc. times of 0.087ms read and 0.096ms write. I tried different CPU, different motherboard, bought a PCIE adapter and tried all of the available pcie slots versus the m.2 slots but still the same crummy 4k read/writes with high acc. times in as ssd benchmark. if I turn off hyperthreading then those speeds double for 4k read and quadruple or quintuple for 4k write. if I install windows 7 then I also get very high 4k read/write times and acc. times of less than 0.023ms. not sure what the issue is with windows 10, but I feel the performance lag from these slow 4k read/writes.

@Fernando Hi Fernando ! I wanna know do you have modded driver for this m.2 nvme sdd XPG GAMMIX S11 Pro PCIe Gen3x4 M.2 2280