(Solved) How To Downgrade From Windows 10/11 To Windows 7
If you bought new computer with Windows 10/11 and if you dislike it because of OS-builtin advertising, forced updates, untimely reboots and pervasive telemetry — then way to go is to return to Windows 7.
To downgrade from Windows 10/11 to Windows 7:
1. Obtaining valid product key and installation media
If you are an organization with existing computers running Windows 7, then, most likely, you have downgrade rights, i.e. licenses for Windows 10/11 Pro acquired though an OEM allow you to install Windows 7 Professional to new computers using the same product key which was used earlier to install Windows 7 Professional to old computers.
If you are an individual user who bought new computer with preinstalled Windows 10/11, then downgrade rights usually don't apply, and, assuming that you are going to use this new computer yourself, you have to buy a new Retail license for Windows 7.
(This short how-to is not meant to replace the Microsoft License Terms. Always refer to Microsoft official documentation on licensing.)
2. Integrating drivers to Windows 7 installation media
After legally obtaining Microsoft Windows 7 Installation Media and Product Key, you need to integrate latest USB 3.0 and NVMe drivers into Windows Setup, otherwise you may observe the following effects during installation:
You can use FlashBoot Pro to avoid these effects. It will prepare Windows installation USB thumbdrive with slipstreamed drivers, so you can quickly and easily install Windows 7 to any new computer, even Kaby Lake and Ryzen platforms. Besides of builtin USB 3.0, NVMe and RAID drivers, FlashBoot can also slipstream user-supplied drivers.
3. Booting your computer from Windows 7 installation media
Power off your computer, then plug Windows installation media to any available USB port, then follow this guide.
Please note that during Windows installation all data on disk C: will be lost, so you need to temporarily save it to other location (such as disk D:, USB thumbdrive or network-shared folder on another computer) before running Windows 7 Setup.
Also it is a very good idea to download and save all installable drivers for Windows 7 (Wi-Fi, Ethernet, Sound, Graphics etc) from website of your laptop or motherboard vendor, in advance. After Windows 7 is installed, it may be unable to access the network without appropriate drivers.