Have no nvm driver for windows 7  

I recently purchased an Acer Aspire S13 Ultrabook with Windows 10 pre-installed. Absolutely detest Windows 10 and want to downgrade to Windows 7 Ultimate (have genuine disk). Windows 7 install sees the SSD, but cannot access it asking for a "Standard NVM Controller" (Intel SSDPEKKW512G7). I have integrated KB2990941 and KB3087873 into the OS, but has made no noticeable difference. I have perused the internet for several weeks but still cannot find the correct answer. How can I install Windows 7 on this drive? Help is desperately needed please!

Yes I did, and hopefully did it correctly. Instructions on how-to came off the internet as I have never integrated files before. When looking at boot.wim and install.wim in the Sources folder, the date is current.

Thank you very much for your help. Will let you know how I go.

Hello again, I spent several hours trying to get Windows 7 to recognise a driver which you kindly sent to me. Nothing is working so far. This is how I slipstreamed the install.wim and the boot.wim. It appeared to go well, but have no idea if the method is correct.
Downgrade Windows 10 pre-installation to Windows 7 using an NVM SSD
1. Download patches:
KB2990941 (Windows6.1-KB2990941-x64.msu)
KB3087873 (Windows6.1-KB3087873-x64.msu)

2. Make directories:
C:\ISO\Win7SP1
C:\ISO\unpacked
C:\packages

3. Extract the patches to C:\packages

4. Copy all the files from Windows 7 SP1 setup media (ISO/DVD/USB) to C:\ISO\Win7SP1.

5. Open an elevated command prompt.

Integrating C:\ISO\Win7SP1\sources\install.wim

6. At the elevated command prompt, type the following command:
Dism /Get-WIMInfo /WimFile:C:\ISO\Win7SP1\sources\install.wim
It will show you the indexes of the images contained in the WIM file. Note the edition of Windows 7 for which you have the product key and its appropriate index. Suppose for example, you are using Windows 7 Ultimate.

7. Type the following command to mount the offline Windows image.
Dism /Mount-WIM /WimFile:C:\ISO\Win7SP1\sources\install.wim /Name:"Windows 7 Ultimate" /MountDir:C:\ISO\unpacked
This command will mount the Windows 7 SP1 Ultimate edition files to the folder C:\ISO\unpacked. The folder must exist on your system, otherwise correct the path.

8. Type the following command to integrate KB2990941 for Windows 7 64-bit
Dism /Image:C:\ISO\unpacked /Add-Package /PackagePath:C:\packages\Windows6.1-KB2990941-x64.msu

9. Now, type the following command to add the KB3087873 package to the image.
Do it as follows. For 64-bit Windows 7 SP1, execute this command:
Dism /Image:C:\ISO\unpacked /Add-Package /PackagePath:C:\packages\Windows6.1-KB3087873-x64.msu

10. Once this is done, type the following command to commit the changes and unmount the image.
Dism /Unmount-WIM /MountDir:C:\ISO\unpacked /Commit


Integrating C:\ISO\Win7SP1\sources\boot.wim

11. At the elevated command prompt, type the following command:
Dism /Get-WIMInfo /WimFile:C:\ISO\Win7SP1\sources\boot.wim
It will show you the indexes of the images contained in the WIM file. Note the edition of Windows 7 for which you have the product key and its appropriate index.

12. Type the following command to mount the offline Windows image.
Dism /Mount-WIM /WimFile:C:\ISO\Win7SP1\sources\boot.wim /Index:2 /MountDir:C:\ISO\unpacked
This command will mount the Windows x64 files to the folder C:\ISO\unpacked. The folder must exist on your system, otherwise correct the path.

13. Type the following command to integrate KB2990941 for Windows 7 64-bit
Dism /Image:C:\ISO\unpacked /Add-Package /PackagePath:C:\packages\Windows6.1-KB2990941-x64.msu

14. Now, type the following command to add the KB3087873 package to the image.
Do it as follows. For 64-bit Windows 7 SP1, execute this command:
Dism /Image:C:\ISO\unpacked /Add-Package /PackagePath:C:\packages\Windows6.1-KB3087873-x64.msu

15. Once this is done, type the following command to commit the changes and unmount the image.
Dism /Unmount-WIM /MountDir:C:\ISO\unpacked /Commit

Any suggestions would be greatly appreciated. Many thanks!

Many thanks for the link. The program is easy to use and took 2 hours to complete (using my desktop, not the Acer Ultrabook). After completion, I burnt a DVD (DL) and tried to install it on the ultrabook which still has Windows 10 on it. The setup screen is Windows 10 and the first screen asks for a license number. This confused me as I was not sure if the license number was to be a Windows 7 or a Windows 10. However, I tried both but to no avail and could not go any further with the setup. I have 3 genuine copies of Windows 7 Ultimate and none of the license numbers were accepted. I shall try again tomorrow as it is now bedtime. Your help has been invaluable and I thank you kindly for your assistance and research.

Windows 10 dug its heels in and would not let go, so this morning I wiped the drive and installed Windows 7 from the portable BD drive and all went well also accepting the license key. A huge thanks to you and most appreciated as it is now 4 months since I have been 'fighting' with Windows 10 and Windows 10 winning each time. Many thanks for the link as I would not have understood what to do if I saw the link and would have bypassed it. Thank you so much for your support and research!! xx

ColourOz said:

I recently purchased an Acer Aspire S13 Ultrabook with Windows 10 pre-installed. Absolutely detest Windows 10 and want to downgrade to Windows 7 Ultimate (have genuine disk). Windows 7 install sees the SSD, but cannot access it asking for a "Standard NVM Controller" (Intel SSDPEKKW512G7). I have integrated KB2990941 and KB3087873 into the OS, but has made no noticeable difference. I have perused the internet for several weeks but still cannot find the correct answer. How can I install Windows 7 on this drive? Help is desperately needed please!

Although from your later posts it appears you've finally been successful in accomplishing your objective, I mention several things.

(1) Modern machines based on Skylake or newer hardware use USB 3.0 in order to support USB mouse/keyboard. So it's necessary for the OS installer to have built-in USB 3.0 support in order to be able to use the USB mouse and keyboard during OS install (unless your machine also has PS/2 serial connectors for PS/2 mouse and keyboard, which is almost 100% no longer the case).

The original retail Win7 installer does not contain built-in driver support for USB 3.0 (as Win8/8.1 and Win10 do). So the first problem is to get the needed but missing USB 3.0 driver "slipstreamed" into the Win7 installer (conceptually equivalent to updating the boot.wim).

(2) The original Win7 installer also does not contain built-in driver support for modern NVMe SSD devices, although again the Win10 installer does.

So the second problem, if you want to install Win7 to an NVMe SSD target drive, is to again "slipstream" the necessary NVMe driver into boot.wim.

The above Win7-related driver deficiency issues have been around for a good number of years ever since Skylake hardware and Intel 100 Series Chipset motherboards became available. The easiest way to resolve BOTH of the above problems is to create new bootable USB Win7 installation media which includes BOTH of the missing drivers added to the original Win7 installation media (on DVD or ISO file), using a simple and quick utility available from Gigabyte (developed several years ago in response to the desire of Gigabyte motherboard users to install Win7 on new Gigabyte Skylake hardware).

This Gigabyte utility program is available from their Download page, included in the "Utility" section. Scroll down and click on the "Utility" category to expand it. Then scroll down further to get to the "Windows USB Installation Tool (Note) Support Intel 100/200/X299 series motherboards" item.

To make your life easier here is the DIRECT LINK to download that ZIP file containing the Gigabyte USB Win7 boot media rebuilder utility program. Again, if you run this program it will merge the assumed available Win7 installer on DVD or ISO with the two missing and needed drivers (USB 3.0 and NVMe), to create a new bootable USB media (e.g. 4GB USB 2.0/3.0 flash drive) suitable for installing Win7 on Skylake hardware, which is the last hardware generation still supported by MS for Win7. Note that MS does not offically support Win7 for Kaby Lake hardware.


Finally, one more suggestion... for those of us who dislike the new "tiled" interface born in Win8/8.1 and continued into Win10, and who also dislike (or at least feel uncomfortable and unfamiliar with) the Start Menu brought back by MS with Win10.

I cannot recommend highly enough the Start10 product from Stardock. It literally returns the true "classic" Win7 Start Menu to Win10 (same as Start8 returned the Win7 Start Menu to Win8/8.1). You just install it, and virtually all of the default configuration options are set to deliver you the good old familiar Win7 Start Menu and all of its functionality. Exactly like Win7, with the Win10 Start Menu also still available simultaneously as an alternative option if you want to use that as well.

There are a number of customization setting to do lots of things to the default Win7 appearance, to satisfy whatever degree of compromise or taste you might have. But if you're looking for a genuine 100% "classic Win7 Start Menu" on a Win10 machine, then Start10 is for you.