How to roll back your Win 10 OS to Windows 7 or 8.1 ?

If you’re struggling with the system after upgrading to Windows 10 or just not a fan of the new features, there’s a way to restore your operating system to Windows 7 or Windows 8.1. These rollback options are available within 30 days of upgrading the operating system, because the backup can no longer be available.

Before you begin, keep in mind that operating system rewinding can cause data loss. It is strongly recommended to make copies of important files before proceeding.

How to uninstall updates in Windows 10
Using Advanced Settings
Depending on whether you have made a system backup, the rollback options vary slightly.

To start, turn on your computer and hold down the SHIFT + F8 keys. This will generate the Start menu.
Using a backup
If you have made the system backup, click Advanced Options, and then select Use System Restore image. With a bit of luck, you can restore Windows 7 or 8.1.
Without a backup
If you do not have a backup, go to Advanced options, then click Return to Windows 8.1/7. Windows 10 restores the previous operating system along with all documents.
Restore the system after Windows Update 10
If you want to restore your system settings after upgrading to Windows 10, you can do so from the Setup menu as long as you have access to the desktop.

Go to Settings > Update and security > restore options, then select Back to a previous generation: