yes, the certificated is installed with succesufully
signature driver disabled

I am not able to load windows, when charge circle points I take a block

Do you have any idea why the Microsoft controller is faster than both Intel and Samsung's very own for their EVO 970?

Also, sorry for the noob question, but how does one 'switch' the controller if I already have installed the Samsung NVMe Controller? Thank you in advance.

The search of NVMe driver brought me happily to here :)
I've bought my very first NVMe SSD (should arrive tomorrow) and I know that Windows 7 doesn't have native support for NVMe devices. So I installed the KB2990941 (not available anymore by MS; found another source).
I'm a little bit confused what this KB is. Some say, you only need it if you want to install Windows 7 on a booting NVMe SSD, some say it's a driver in general to make use of NVMe support in Windows 7.
Is this KB2990941 a native driver for Windows 7 (not even to integrate into a custom boot medium for installing Windows 7 on a NVMe device) or do I need this KB2990941 in all cases to get a NVMe device to run in Windiws 7 (e.g. as a second disk)?
The last of my questions would be: do I have to uninstall this KB2990941 if I want to install another third party driver (OFA)?

Thank you very much :)

Just to add what happened to me, I had a Samsung 970 EVO NVMe M.2 drive in a PCIex card. I'm also running a P9X79 PRO board, so I have the Intel X79 chipset.

I tested three drivers. The default windows one that it installed with the OS. The Samsung one listed on the "Recommended AHCI/RAID and NVMe Drivers" thread in the generic board. And the OFA drivers from the first post in this thread (the ones signed by Fernando).

The OFA gave me the best preformance, but it wasn't that much better then the Samsung ones. Maybe 100 MB/s or so better. So I left them on.

Then I was reading about the reboot/shutdown/startup issues with that driver so I tested. Sure enough, I couldn't shutdown. Windows would popup the Shutdown screen, but then bump me back to the desktop (with all applications closed). I then forced the shutdown by clicking shutdown and then while it was in between the shutdown screen and windows reappearing, I hit my power button. That seemed to do the trick.

When restarting the system, I was kicked into the Automatic Repair (which failed) and then I was stuck. Nothing I tried seemed to work. I even tried the advance boot options, and then F7 to disable the driver signature check. That didn't work. It started to boot, but on the loading screen I blue screened with an error that said "NO STORAGE CONTROLLER" or something to that effect. Since I'm an idiot and didn't have a restore point, I ended up having to boot safe mode. From there, the old driver was back. I then rebooted normally and Windows was back to how it was with the default driver.

I've now reinstalled the Samsung one that doesn't have the shutdown/start-up problems.

EDIT: I'm on Windows 10 x64 1803.

@Fernando hello i put this driver >64bit OFA NVMe Driver v1.5.0.0 for Win10 x64 mod+signed by me< and my problem is installed works but restart dont boot the system!!no problem because i have restore point!!!how to works this driver mod?thanks

@Fernando only samsung Nvme driver!!!! OFA driver without your mod is stable or not?

New and latest Samsung Nvme driver NVMe 3.1 (3.1.0.1901) :

Changelog :
*********
FIXED : INTERNAL_POWER_ERROR with Windows 1809 (Redstone 5)

https://www.touslesdrivers.com/index.php...e=3&v_code=7342

direct link :
https://www.touslesdrivers.com/php/const...160&v_langue=fr

As of those drivers compiled for Windows 2003 server, maybe TRIM is intentionally disabled because Windows 2003 was not aware of SSDs and TRIM. The normal version 1.5 should support TRIM properly, of course - that would be major dealbreaker on any of todays SSDs and OSs.

Hello,

just letting you know that I just tried the OFA signed driver downloaded from these forums and it seems to work on old z77-ds3h and Kingston SSD without reboot/shutdown problems. I will see over next days/weeks how it works in longer timespan.

Many thanks for maintaining these forums and issues, Fernando.