How To Uninstall Windows 10 And Install Windows 7
Some companies seem to be running a unified client in Windows 7. However, it is difficult to buy a PC with Windows 7 in a mass retailer. In such cases, Windows 10 can be downgraded to Windows 7. It introduces the condition and the method.
The extended support deadline for Windows 7 extends to January 14, 2020 (the main stream support deadline has already ended), but there are still a lot of companies that continue to use Windows 7 (Windows For the OS support period, see the Tech TIPS “Windows 7/8.1/10 support period”. Windows 7 has a unified operating system, and you want to move to Windows 10 all at once.
Windows OS support period
However, PCs sold at mass retailers have already become Windows 10 only, making it difficult to buy new PCs with Windows 7.
In such cases, you can use Windows 10 downgrade rights (the rights to the previous version) to Windows 7 or Windows 8.1. Note that even with Windows 7 and Windows 8.1, you will not be able to extend your support deadlines, and you will need to upgrade to Windows 10 later.
This paper summarizes the conditions and methods for the Windows 10 PC using the download rights to Windows 7. For information on how to downgrade your PC from Windows 7 to Windows 10 without having to upgrade to Windows 7 again, go to the Tech TIPS “upgrade windows Please refer to restore 10 back to the original Windows 7/8.1. Just after upgrading to Windows 10, the original Windows 7 archive data will be automatically deleted in 28 days, so windows To revert to 7, you need to reinstall Windows 7 from the recovery disk (stored in the recovery area in the storage case of a manufacturer PC).
Conditions for downgrading from Windows 10 to Windows 7
The right to downgrade from Windows 10 to Windows 7 (or Windows 8/8.1) is given only to Pro/Enterprise/Education editions, and home and s are not eligible. The version of the OS that can be downgraded and the corresponding downgrade destination versions are shown in the table below.
|Downgrade destination version||OEM Pre-installed version||Volume Licensing|
|Windows 10 Pro||Windows 10 Pro||Windows 10 Enterprise||Windows 10 Education|
|Windows 8／8.1 Enterprise||×||×||○||○|
|Windows 8.1 Pro||○||○||○||○|
|Windows 7 Enterprise||×||×||○||○|
|Windows 7 Professional||○||○||○||○|
|A combination of versions that can be downgraded from Windows 10
For example, if you purchase a PC with Windows 10 Pro, you are allowed to use Windows 8.1 Pro or Windows 7 Professional.
For direct-selling PC vendors, use Windows 10 Pro downgrade rights to ship Windows 7 Professional with pre-installed Windows 10 Some offer pro downgrade services. It is recommended that you purchase a PC with Windows 7 Professional pre-installed, because you do not have to install and configure the device drivers yourself, and you can also get support in Windows 7.
On the other hand, you can downgrade your purchased Windows 10 Pro pc to Windows 7 Professional. However, unlike an upgrade, you cannot revert to Windows 7 while still maintaining the Windows 10 user data and applications that have already been saved. To downgrade is actually a new installation of Windows 7. You need to set up a backup, such as the files and settings you need before installation, and reinstall or restore them after you install Windows 7.
Getting ready to downgrade from Windows 10 to Windows 7
If you want to downgrade from Windows 10 to Windows 7, you need to provide your own installation media and product key. The media licensed to exercise downgrade rights are limited to:
- A previous version of a bundle (backup) media or downgrade media that was shipped from a PC vendor and attached to a PC that you own
- The previous version of the package media was sold in general stores
- Volume Licensing media provided by Microsoft
The product key must be activated by phone to the activation window, since it is not possible to authenticate online if you use a previously licensed, pre-installed version of the media. In addition, if a user with a volume licensing agreement performs a downgrade, the ISO image and product key of the Windows 7 installation disk can be downloaded from the Volume Licensing Service center.
Considerations for installing Windows 7
It’s important to note that when you downgrade from Windows 10 to Windows 7, you must have a device driver for Windows 7. If you already have a device that does not support the old OS, the worst is that it will not be available. In advance, you may want to check to see if a PC vendor provides a set of device drivers for Windows 7 for that model.
In recent PCs, there are many cases that support UEFI. But you need to be a little careful to install Windows 7 in UEFI mode using USB memory. For more information, see tips below.
After installing Windows 7, you need to install an unrecognized device driver, as mentioned earlier.
Because there is a case that the touch pad is not recognized unexpectedly, it might be better to have a mouse of the USB connection. If the CPU is after the sixth generation Intel Core processor (Skylake), you may not be able to use the USB device in the middle of the installation, when you want to respond to the following tips article.
Newer CPUs (Intel’s Kaby Lake or AMD Bristol Ridge or later) are already out of support for Windows 7, so it is better to avoid downgrading to the skylake. See the article below for details.
Windows 7/8.1 Early support for Skylake CPU is withdrawn and restored (Windows 10 the Latest)
Information for installing and operating Windows 7
As for the actual installation method of Windows 7 and how to apply the initial patch, please refer to the above Tech tips and the following article because I do not elaborate here.